diff --git a/ChangeLog b/ChangeLog
index ec144c6534b..b6c474f6f92 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,12 +10,22 @@ For users:
 - New: Can filter events on a group of users.
 - New: Add thirdparty to filter on events. 
 - Fix: [ bug #1487 ] PAYMENT_DELETE trigger does not intercept trigger action
+- Fix: [ bug #1470, #1472, #1473] User trigger problem
+- Fix: [ bug #1489, #1491 ] Intervention trigger problem
+- Fix: [ bug #1492, #1493 ] Member trigger problem
+- Fix: [ bug #1474, #1475 ] Contract trigger problem
+- Fix: [ bug #1496 ] ACTION_DELETE trigger does not show trigger error
+- Fix: [ bug #1494 ] CATEGORY_CREATE and CATEGORY_MODIFY triggers do not intercept trigger action
+- Fix: [ bug #1502 ] DON_CREATE trigger does not intercept trigger action
+- Fix: [ bug #1505, #1504] Project trigger problem
+
 
 For translators:
 - Update language files.
 
 For developers:
 - New: Add hook "searchAgendaFrom".
+- New: Add trigger DON_UPDATE, DON_DELETE
 
 
 ***** ChangeLog for 3.6 compared to 3.5.* *****
diff --git a/dev/skeletons/skeleton_class.class.php b/dev/skeletons/skeleton_class.class.php
index c36dad4b4b5..49937c40314 100644
--- a/dev/skeletons/skeleton_class.class.php
+++ b/dev/skeletons/skeleton_class.class.php
@@ -105,10 +105,8 @@ class Skeleton_Class extends CommonObject
 	            // want this action calls a trigger.
 
 	            //// Call triggers
-	            //include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-	            //$interface=new Interfaces($this->db);
-	            //$result=$interface->run_triggers('MYOBJECT_CREATE',$this,$user,$langs,$conf);
-	            //if ($result < 0) { $error++; $this->errors=$interface->errors; }
+	            //$result=$this->call_trigger('MYOBJECT_CREATE',$user);
+	            //if ($result < 0) { $error++; //Do also what you must do to rollback action if trigger fail}            
 	            //// End call triggers
 			}
         }
@@ -216,12 +214,10 @@ class Skeleton_Class extends CommonObject
 	            // want this action calls a trigger.
 
 	            //// Call triggers
-	            //include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-	            //$interface=new Interfaces($this->db);
-	            //$result=$interface->run_triggers('MYOBJECT_MODIFY',$this,$user,$langs,$conf);
-	            //if ($result < 0) { $error++; $this->errors=$interface->errors; }
+	            //$result=$this->call_trigger('MYOBJECT_MODIFY',$user);
+	            //if ($result < 0) { $error++; //Do also what you must do to rollback action if trigger fail}            
 	            //// End call triggers
-	    	}
+			 }
 		}
 
         // Commit or rollback
@@ -264,12 +260,10 @@ class Skeleton_Class extends CommonObject
 				// Uncomment this and change MYOBJECT to your own tag if you
 		        // want this action calls a trigger.
 
-		        //// Call triggers
-		        //include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-		        //$interface=new Interfaces($this->db);
-		        //$result=$interface->run_triggers('MYOBJECT_DELETE',$this,$user,$langs,$conf);
-		        //if ($result < 0) { $error++; $this->errors=$interface->errors; }
-		        //// End call triggers
+	            //// Call triggers
+	            //$result=$this->call_trigger('MYOBJECT_DELETE',$user);
+	            //if ($result < 0) { $error++; //Do also what you must do to rollback action if trigger fail}            
+	            //// End call triggers
 			}
 		}
 
diff --git a/htdocs/adherents/class/adherent.class.php b/htdocs/adherents/class/adherent.class.php
index b03bff940dd..99b4e7df1f4 100644
--- a/htdocs/adherents/class/adherent.class.php
+++ b/htdocs/adherents/class/adherent.class.php
@@ -347,12 +347,10 @@ class Adherent extends CommonObject
 
                 if (! $notrigger)
                 {
-                    // Appel des triggers
-                    include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                    $interface=new Interfaces($this->db);
-                    $result=$interface->run_triggers('MEMBER_CREATE',$this,$user,$langs,$conf);
-                    if ($result < 0) { $error++; $this->errors=$interface->errors; }
-                    // Fin appel triggers
+                    // Call trigger
+                    $result=$this->call_trigger('MEMBER_CREATE',$user);
+                    if ($result < 0) { $error++; }            
+                    // End call triggers
                 }
 
                 if (count($this->errors))
@@ -599,12 +597,10 @@ class Adherent extends CommonObject
 
                 if (! $error && ! $notrigger)
                 {
-                    // Appel des triggers
-                    include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                    $interface=new Interfaces($this->db);
-                    $result=$interface->run_triggers('MEMBER_MODIFY',$this,$user,$langs,$conf);
-                    if ($result < 0) { $error++; $this->errors=$interface->errors; }
-                    // Fin appel triggers
+                    // Call trigger
+                    $result=$this->call_trigger('MEMBER_MODIFY',$user);
+                    if ($result < 0) { $error++; }            
+                    // End call triggers
                 }
             }
 
@@ -782,12 +778,10 @@ class Adherent extends CommonObject
 
         if (! $error)
         {
-        	// Appel des triggers
-       		include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-        	$interface=new Interfaces($this->db);
-        	$result=$interface->run_triggers('MEMBER_DELETE',$this,$user,$langs,$conf);
-        	if ($result < 0) {$error++; $this->errors=$interface->errors;}
-        	// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('MEMBER_DELETE',$user);
+            if ($result < 0) { $error++; }            
+            // End call triggers
         }
 
 
@@ -841,6 +835,8 @@ class Adherent extends CommonObject
             $password_indatabase = $password;
         }
 
+        $this->db->begin();
+        
         // Mise a jour
         $sql = "UPDATE ".MAIN_DB_PREFIX."adherent SET pass = '".$this->db->escape($password_indatabase)."'";
         $sql.= " WHERE rowid = ".$this->id;
@@ -885,23 +881,24 @@ class Adherent extends CommonObject
 
                 if (! $error && ! $notrigger)
                 {
-                    // Appel des triggers
-                    include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                    $interface=new Interfaces($this->db);
-                    $result=$interface->run_triggers('MEMBER_NEW_PASSWORD',$this,$user,$langs,$conf);
-                    if ($result < 0) { $error++; $this->errors=$interface->errors; }
-                    // Fin appel triggers
+                    // Call trigger
+                    $result=$this->call_trigger('MEMBER_NEW_PASSWORD',$user);
+                    if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+                    // End call triggers
                 }
 
+                $this->db->commit();
                 return $this->pass;
             }
             else
             {
+                $this->db->rollback();
                 return 0;
             }
         }
         else
         {
+            $this->db->rollback();
             dol_print_error($this->db);
             return -1;
         }
@@ -1301,12 +1298,10 @@ class Adherent extends CommonObject
                 $this->last_subscription_date_start=$date;
                 $this->last_subscription_date_end=$datefin;
 
-                // Appel des triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface=new Interfaces($this->db);
-                $result=$interface->run_triggers('MEMBER_SUBSCRIPTION',$this,$user,$langs,$conf);
-                if ($result < 0) { $error++; $this->errors=$interface->errors; }
-                // Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('MEMBER_SUBSCRIPTION',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
             }
 
             if (! $error)
@@ -1362,12 +1357,10 @@ class Adherent extends CommonObject
         {
             $this->statut=1;
 
-            // Appel des triggers
-            include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-            $interface=new Interfaces($this->db);
-            $result=$interface->run_triggers('MEMBER_VALIDATE',$this,$user,$langs,$conf);
-            if ($result < 0) { $error++; $this->errors=$interface->errors; }
-            // Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('MEMBER_VALIDATE',$user);
+            if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+            // End call triggers
 
             $this->db->commit();
             return 1;
@@ -1412,12 +1405,10 @@ class Adherent extends CommonObject
         {
             $this->statut=0;
 
-            // Appel des triggers
-            include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-            $interface=new Interfaces($this->db);
-            $result=$interface->run_triggers('MEMBER_RESILIATE',$this,$user,$langs,$conf);
-            if ($result < 0) { $error++; $this->errors=$interface->errors; }
-            // Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('MEMBER_RESILIATE',$user);
+            if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+            // End call triggers
 
             $this->db->commit();
             return 1;
diff --git a/htdocs/categories/class/categorie.class.php b/htdocs/categories/class/categorie.class.php
index 8d2c4ceed46..6eecb1370d6 100644
--- a/htdocs/categories/class/categorie.class.php
+++ b/htdocs/categories/class/categorie.class.php
@@ -212,16 +212,22 @@ class Categorie extends CommonObject
 					}
 				}
 				else if ($reshook < 0) $error++;
+				
+                // Call trigger
+                $result=$this->call_trigger('CATEGORY_CREATE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('CATEGORY_CREATE',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; }
-				// Fin appel triggers
-
-				$this->db->commit();
-				return $id;
+                if ( ! $error )
+                {
+                    $this->db->rollback(); 
+                    return -3;
+                }
+                else
+                {
+    				$this->db->commit();
+    				return $id;
+                }
 			}
 			else
 			{
@@ -303,12 +309,10 @@ class Categorie extends CommonObject
 			$this->db->commit();
 
 
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('CATEGORY_MODIFY',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('CATEGORY_MODIFY',$user);
+            if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+            // End call triggers
 
 			return 1;
 		}
@@ -432,12 +436,10 @@ class Categorie extends CommonObject
 						}
 					}
 				}
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('CATEGORY_DELETE',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; $this->error=join(',',$this->errors); }
-				// Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('CATEGORY_DELETE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 			}
 		}
 
@@ -477,6 +479,8 @@ class Categorie extends CommonObject
         if ($type=='contact') $column_name='socpeople';
         if ($type=='fournisseur') $column_name='societe';
 
+        $this->db->begin();
+        
 		$sql  = "INSERT INTO ".MAIN_DB_PREFIX."categorie_".$type." (fk_categorie, fk_".$column_name.")";
 		$sql .= " VALUES (".$this->id.", ".$obj->id.")";
 
@@ -517,6 +521,7 @@ class Categorie extends CommonObject
 
 				if ($error)
 				{
+				    $this->db->rollback();
 					return -1;
 				}
 			}
@@ -524,18 +529,26 @@ class Categorie extends CommonObject
 			// Save object we want to link category to into category instance to provide information to trigger
 			$this->linkto=$obj;
 
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('CATEGORY_LINK',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; $this->error=$interface->error; }
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('CATEGORY_LINK',$user);
+            if ($result < 0) { $error++; }            
+            // End call triggers
 
-			if (! $error) return 1;
-			else return -2;
+			if (! $error)
+			{
+			    $this->db->commit();
+			    return 1;
+			}
+			else
+			{ 
+			    $this->db->rollback();
+			    return -2;
+			}
+			    
 		}
 		else
 		{
+		    $this->db->rollback();
 			if ($this->db->lasterrno() == 'DB_ERROR_RECORD_ALREADY_EXISTS')
 			{
 				$this->error=$this->db->lasterrno();
@@ -570,6 +583,8 @@ class Categorie extends CommonObject
 		$column_name=$type;
         if ($type=='contact') $column_name='socpeople';
         if ($type=='fournisseur') $column_name='societe';
+        
+        $this->db->begin();
 
 		$sql  = "DELETE FROM ".MAIN_DB_PREFIX."categorie_".$type;
 		$sql .= " WHERE fk_categorie = ".$this->id;
@@ -581,18 +596,25 @@ class Categorie extends CommonObject
 			// Save object we want to unlink category off into category instance to provide information to trigger
 			$this->unlinkoff=$obj;
 
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('CATEGORY_UNLINK',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('CATEGORY_UNLINK',$user);
+            if ($result < 0) { $error++; }            
+            // End call triggers
 
-			if (! $error) return 1;
-			else return -2;
+			if (! $error)
+			{
+			    $this->db->commit();
+			    return 1;
+			}
+			else
+			{
+			    $this->db->rollback();
+                return -2;   
+			}
 		}
 		else
 		{
+		    $this->db->rollback();
 			$this->error=$this->db->lasterror();
 			return -1;
 		}
diff --git a/htdocs/comm/action/class/actioncomm.class.php b/htdocs/comm/action/class/actioncomm.class.php
index ee9e4c032ee..139ab2d048a 100644
--- a/htdocs/comm/action/class/actioncomm.class.php
+++ b/htdocs/comm/action/class/actioncomm.class.php
@@ -227,14 +227,10 @@ class ActionComm extends CommonObject
 
             if (! $error && ! $notrigger)
             {
-                // Appel des triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface=new Interfaces($this->db);
-                $result=$interface->run_triggers('ACTION_CREATE',$this,$user,$langs,$conf);
-                if ($result < 0) {
-                    $error++; $this->errors=$interface->errors;
-                }
-                // Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('ACTION_CREATE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
             }
 
             if (! $error)
@@ -390,14 +386,10 @@ class ActionComm extends CommonObject
         {
             if (! $notrigger)
             {
-                // Appel des triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface=new Interfaces($this->db);
-                $result=$interface->run_triggers('ACTION_DELETE',$this,$user,$langs,$conf);
-                if ($result < 0) {
-                    $error++; $this->errors=$interface->errors;
-                }
-                // Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('ACTION_DELETE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
             }
 
             if (! $error)
@@ -500,14 +492,10 @@ class ActionComm extends CommonObject
 
             if (! $notrigger)
             {
-                // Appel des triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface=new Interfaces($this->db);
-                $result=$interface->run_triggers('ACTION_MODIFY',$this,$user,$langs,$conf);
-                if ($result < 0) {
-                    $error++; $this->errors=$interface->errors;
-                }
-                // Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('ACTION_MODIFY',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
             }
 
             if (! $error)
diff --git a/htdocs/comm/action/fiche.php b/htdocs/comm/action/fiche.php
index 450d7475947..ca17c261680 100644
--- a/htdocs/comm/action/fiche.php
+++ b/htdocs/comm/action/fiche.php
@@ -283,8 +283,7 @@ if ($action == 'confirm_delete' && GETPOST("confirm") == 'yes')
 		}
 		else
 		{
-			$mesg=$object->error;
-			setEventMessage($mesg,'errors');
+			setEventMessage($object->error,'errors');
 		}
 	}
 }
diff --git a/htdocs/compta/dons/class/don.class.php b/htdocs/compta/dons/class/don.class.php
index f7bd819d969..c9580fcf5c0 100644
--- a/htdocs/compta/dons/class/don.class.php
+++ b/htdocs/compta/dons/class/don.class.php
@@ -307,6 +307,8 @@ class Don extends CommonObject
         $this->country=($this->country?$this->country:$this->country);
 
         $now=dol_now();
+        
+        $this->db->begin();
 
         $sql = "INSERT INTO ".MAIN_DB_PREFIX."don (";
         $sql.= "datec";
@@ -360,19 +362,17 @@ class Don extends CommonObject
         {
             $this->id = $this->db->last_insert_id(MAIN_DB_PREFIX."don");
 
-            // Appel des triggers
-            include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-            $interface=new Interfaces($this->db);
-            $result=$interface->run_triggers('DON_CREATE',$this,$user,$langs,$conf);
-            if ($result < 0) {
-                    $error++; $this->errors=$interface->errors;
-            }
-            // Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('DON_CREATE',$user);
+            if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+            // End call triggers
 
+            $this->db->commit();
             return $this->id;
         }
         else
         {
+            $this->db->rollback();
             dol_print_error($this->db);
             return -1;
         }
@@ -393,6 +393,8 @@ class Don extends CommonObject
         $this->country_id=($this->country_id>0?$this->country_id:$this->country_id);
         $this->country=($this->country?$this->country:$this->country);
 
+        $this->db->begin();
+        
         $sql = "UPDATE ".MAIN_DB_PREFIX."don SET ";
         $sql .= "amount = " . price2num($this->amount);
         $sql .= ",fk_paiement = ".($this->modepaiementid?$this->modepaiementid:"null");
@@ -418,10 +420,17 @@ class Don extends CommonObject
         $result = $this->db->query($sql);
         if ($result)
         {
+            // Call trigger
+            $result=$this->call_trigger('DON_UPDATE',$user);
+            if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+            // End call triggers
+            
+            $this->db->commit();
             return 1;
         }
         else
         {
+            $this->db->rollback();
             dol_print_error($this->db);
             return -1;
         }
@@ -435,6 +444,8 @@ class Don extends CommonObject
      */
     function delete($rowid)
     {
+        
+        $this->db-begin();
 
         $sql = "DELETE FROM ".MAIN_DB_PREFIX."don WHERE rowid = $rowid AND fk_statut = 0;";
 
@@ -443,10 +454,17 @@ class Don extends CommonObject
         {
             if ( $this->db->affected_rows($resql) )
             {
+                // Call trigger
+                $result=$this->call_trigger('DON_DELETE',$user);
+                if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+                // End call triggers
+                
+                $this->db->commit();
                 return 1;
             }
             else
             {
+                $this->db->rollback();
                 return -1;
             }
         }
diff --git a/htdocs/contrat/class/contrat.class.php b/htdocs/contrat/class/contrat.class.php
index 9483c5e56df..859f1dd80f5 100644
--- a/htdocs/contrat/class/contrat.class.php
+++ b/htdocs/contrat/class/contrat.class.php
@@ -158,12 +158,10 @@ class Contrat extends CommonObject
 		$resql = $this->db->query($sql);
 		if ($resql)
 		{
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('CONTRACT_SERVICE_ACTIVATE',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('CONTRACT_SERVICE_ACTIVATE',$user);
+            if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+            // End call triggers
 
 			$this->db->commit();
 			return 1;
@@ -206,12 +204,10 @@ class Contrat extends CommonObject
 		$resql = $this->db->query($sql);
 		if ($resql)
 		{
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('CONTRACT_SERVICE_CLOSE',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('CONTRACT_SERVICE_CLOSE',$user);
+            if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+            // End call triggers
 
 			$this->db->commit();
 			return 1;
@@ -322,6 +318,7 @@ class Contrat extends CommonObject
 				dol_syslog(get_class($this)."::validate Echec update - 10 - sql=".$sql, LOG_ERR);
 				dol_print_error($this->db);
 				$error++;
+				$this->error=$this->db->lasterror();
 			}
 
 			if (! $error)
@@ -365,12 +362,10 @@ class Contrat extends CommonObject
 			// Trigger calls
 			if (! $error)
 			{
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('CONTRACT_VALIDATE',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; }
-				// Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('CONTRACT_VALIDATE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 			}
 		}
 		else
@@ -386,7 +381,6 @@ class Contrat extends CommonObject
 		else
 		{
 			$this->db->rollback();
-			$this->error=$this->db->lasterror();
 			return -1;
 		}
 
@@ -756,12 +750,10 @@ class Contrat extends CommonObject
 
 			if (! $error)
 			{
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('CONTRACT_CREATE',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; }
-				// Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('CONTRACT_CREATE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 
 				if (! $error)
 				{
@@ -776,7 +768,6 @@ class Contrat extends CommonObject
 				}
 				else
 				{
-					$this->error=$interface->error;
 					dol_syslog(get_class($this)."::create - 30 - ".$this->error, LOG_ERR);
 
 					$this->db->rollback();
@@ -903,14 +894,10 @@ class Contrat extends CommonObject
 
 		if (! $error)
 		{
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('CONTRACT_DELETE',$this,$user,$langs,$conf);
-			if ($result < 0) {
-				$error++; $this->errors=$interface->errors;
-			}
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('CONTRACT_DELETE',$user);
+            if ($result < 0) { $error++; }            
+            // End call triggers
 		}
 
 		if (! $error)
@@ -938,8 +925,7 @@ class Contrat extends CommonObject
 			return 1;
 		}
 		else
-		{
-			$this->error=$this->db->error();
+		{		
 			dol_syslog(get_class($this)."::delete ERROR ".$this->error, LOG_ERR);
 			$this->db->rollback();
 			return -1;
@@ -1255,6 +1241,9 @@ class Contrat extends CommonObject
 
 		if ($this->statut >= 0)
 		{
+		    
+		    $this->db->begin();
+		    
 			$sql = "DELETE FROM ".MAIN_DB_PREFIX."contratdet";
 			$sql.= " WHERE rowid=".$idline;
 
@@ -1264,16 +1253,16 @@ class Contrat extends CommonObject
 			{
 				$this->error="Error ".$this->db->lasterror();
 				dol_syslog(get_class($this)."::delete ".$this->error, LOG_ERR);
+				$this->db->rollback();
 				return -1;
 			}
 
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('LINECONTRACT_DELETE',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('LINECONTRACT_DELETE',$user);
+            if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+            // End call triggers
 
+            $this->db->commit();
 			return 1;
 		}
 		else
@@ -2064,6 +2053,8 @@ class ContratLigne
 				$this->pa_ht = $this->subprice * (1 - $this->remise_percent / 100);
 		}
 
+		$this->db->begin();
+		
 		// Update request
 		$sql = "UPDATE ".MAIN_DB_PREFIX."contratdet SET";
 		$sql.= " fk_contrat='".$this->fk_contrat."',";
@@ -2111,19 +2102,19 @@ class ContratLigne
 		{
 			$this->error="Error ".$this->db->lasterror();
 			dol_syslog(get_class($this)."::update ".$this->error, LOG_ERR);
+			$this->db->rollback();
 			return -1;
 		}
 
 		if (! $notrigger)
 		{
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('LINECONTRACT_UPDATE',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('LINECONTRACT_UPDATE',$user);
+            if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+            // End call triggers
 		}
-
+		
+        $this->db->commit();
 		return 1;
 	}
 
diff --git a/htdocs/core/triggers/interface_90_all_Demo.class.php-NORUN b/htdocs/core/triggers/interface_90_all_Demo.class.php-NORUN
index f0f96961b86..62b758739c7 100644
--- a/htdocs/core/triggers/interface_90_all_Demo.class.php-NORUN
+++ b/htdocs/core/triggers/interface_90_all_Demo.class.php-NORUN
@@ -119,6 +119,8 @@ class InterfaceDemo
         }
         elseif ($action == 'USER_CREATE')
         {
+        	$object->error=$action;
+        	return -1;
             dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
         }
         elseif ($action == 'USER_CREATE_FROM_CONTACT')
@@ -154,6 +156,20 @@ class InterfaceDemo
             dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
         }
 
+		// Action
+        elseif ($action == 'ACTION_MODIFY')
+        {
+            dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
+        }
+        elseif ($action == 'ACTION_CREATE')
+        {
+            dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
+        }
+        elseif ($action == 'ACTION_DELETE')
+        {
+            dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
+        }
+		
 		// Groups
 		elseif ($action == 'GROUP_CREATE')
         {
@@ -487,6 +503,22 @@ class InterfaceDemo
         {
             dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
         }
+        
+        //Donation
+        elseif ($action == 'DON_CREATE')
+        {
+            dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
+        }
+        elseif ($action == 'DON_UPDATE')
+        {
+            dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
+        }
+        elseif ($action == 'DON_DELETE')
+        {
+            dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
+        }
+        
+        
 
 		// Interventions
 		elseif ($action == 'FICHINTER_CREATE')
diff --git a/htdocs/fichinter/class/fichinter.class.php b/htdocs/fichinter/class/fichinter.class.php
index d7bb50682fe..1aff2964eea 100644
--- a/htdocs/fichinter/class/fichinter.class.php
+++ b/htdocs/fichinter/class/fichinter.class.php
@@ -176,13 +176,10 @@ class Fichinter extends CommonObject
 
             if (! $notrigger)
             {
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('FICHINTER_CREATE',$this,$user,$langs,$conf);
-			if ($result < 0) {
-				$error++; $this->errors=$interface->errors;
-			}
+                // Call trigger
+                $result=$this->call_trigger('FICHINTER_CREATE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
             }
 
 			if (! $error)
@@ -240,14 +237,10 @@ class Fichinter extends CommonObject
 
 			if (! $notrigger)
 			{
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('FICHINTER_MODIFY',$this,$user,$langs,$conf);
-			if ($result < 0) {
-				$error++; $this->errors=$interface->errors;
-			}
-			// Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('FICHINTER_MODIFY',$user);
+                if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+                // End call triggers
 			}
 
 			$this->db->commit();
@@ -454,14 +447,10 @@ class Fichinter extends CommonObject
 
 			if (! $error)
 			{
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('FICHINTER_VALIDATE',$this,$user,$langs,$conf);
-	 			if ($result < 0) {
-	 				$error++; $this->errors=$interface->errors;
-	 			}
-				// Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('FICHINTER_VALIDATE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 			}
 
 			if (! $error)
@@ -762,14 +751,10 @@ class Fichinter extends CommonObject
 
 				if (! $notrigger)
 				{
-					// Appel des triggers
-					include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-					$interface=new Interfaces($this->db);
-					$result=$interface->run_triggers('FICHINTER_DELETE',$this,$user,$langs,$conf);
-					if ($result < 0) {
-						$error++; $this->errors=$interface->errors;
-					}
-					// Fin appel triggers
+                    // Call trigger
+                    $result=$this->call_trigger('FICHINTER_DELETE',$user);
+                    if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+                    // End call triggers
 				}
 
 				$this->db->commit();
@@ -1137,14 +1122,10 @@ class FichinterLigne
 
 				if (! $notrigger)
 				{
-					// Appel des triggers
-					include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-					$interface=new Interfaces($this->db);
-					$resulttrigger=$interface->run_triggers('LINEFICHINTER_CREATE',$this,$user,$langs,$conf);
-					if ($resulttrigger < 0) {
-						$error++; $this->errors=$interface->errors;
-					}
-					// Fin appel triggers
+                    // Call trigger
+                    $result=$this->call_trigger('LINEFICHINTER_CREATE',$user);
+                    if ($result < 0) { $error++; }            
+                    // End call triggers
 				}
 			}
 
@@ -1199,14 +1180,10 @@ class FichinterLigne
 
 				if (! $notrigger)
 				{
-					// Appel des triggers
-					include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-					$interface=new Interfaces($this->db);
-					$resulttrigger=$interface->run_triggers('LINEFICHINTER_UPDATE',$this,$user,$langs,$conf);
-					if ($resulttrigger < 0) {
-						$error++; $this->errors=$interface->errors;
-					}
-					// Fin appel triggers
+                    // Call trigger
+                    $result=$this->call_trigger('LINEFICHINTER_UPDATE',$user);
+                    if ($result < 0) { $error++; }            
+                    // End call triggers
 				}
 			}
 
@@ -1217,7 +1194,6 @@ class FichinterLigne
 			}
 			else
 			{
-				$this->error=$this->db->lasterror();
 				dol_syslog("FichinterLigne::update Error ".$this->error, LOG_ERR);
 				$this->db->rollback();
 				return -1;
@@ -1309,21 +1285,16 @@ class FichinterLigne
 				$result = $this->update_total();
 				if ($result > 0)
 				{
-					$this->db->commit();
-
 					if (! $notrigger)
 					{
-						// Appel des triggers
-						include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-						$interface=new Interfaces($this->db);
-						$resulttrigger=$interface->run_triggers('LINEFICHINTER_DELETE',$this,$user,$langs,$conf);
-						if ($resulttrigger < 0) {
-							$error++; $this->errors=$interface->errors;
-						}
-						// Fin appel triggers
+                        // Call trigger
+                        $result=$this->call_trigger('LINEFICHINTER_DELETE',$user);
+                        if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+                        // End call triggers
 					}
-
-					return $result;
+					
+                    $this->db->commit();					
+                    return $result;
 				}
 				else
 				{
diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index c2b8b95f608..82e9dd72874 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -130,15 +130,9 @@ class Project extends CommonObject
 
             if (!$notrigger)
             {
-                // Call triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface = new Interfaces($this->db);
-                $result = $interface->run_triggers('PROJECT_CREATE', $this, $user, $langs, $conf);
-                if ($result < 0)
-                {
-                    $error++;
-                    $this->errors = $interface->errors;
-                }
+                // Call trigger
+                $result=$this->call_trigger('PROJECT_CREATE',$user);
+                if ($result < 0) { $error++; }            
                 // End call triggers
             }
         }
@@ -199,6 +193,8 @@ class Project extends CommonObject
 
         if (dol_strlen(trim($this->ref)) > 0)
         {
+            $this->db->begin();
+            
             $sql = "UPDATE " . MAIN_DB_PREFIX . "projet SET";
             $sql.= " ref='" . $this->db->escape($this->ref) . "'";
             $sql.= ", title = '" . $this->db->escape($this->title) . "'";
@@ -216,15 +212,9 @@ class Project extends CommonObject
             {
                 if (!$notrigger)
                 {
-                    // Call triggers
-                    include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                    $interface = new Interfaces($this->db);
-                    $result = $interface->run_triggers('PROJECT_MODIFY', $this, $user, $langs, $conf);
-                    if ($result < 0)
-                    {
-                        $error++;
-                        $this->errors = $interface->errors;
-                    }
+                    // Call trigger
+                    $result=$this->call_trigger('PROJECT_MODIFY',$user);
+                    if ($result < 0) { $error++; }            
                     // End call triggers
                 }
 
@@ -259,13 +249,24 @@ class Project extends CommonObject
                 		}
                 	}
                 }
+                if (! $error )
+                {
+                    $this->db->commit();
+                    $result = 1;
+                }
+                else
+                {
+                    $this->db->rollback();
+                    $result = -1;
+                }
 
-                $result = 1;
+                
             }
             else
             {
                 $this->error = $this->db->lasterror();
                 dol_syslog(get_class($this)."::Update error -2 " . $this->error, LOG_ERR);
+                $this->db->rollback();
                 $result = -2;
             }
         }
@@ -528,17 +529,18 @@ class Project extends CommonObject
 
             if (!$notrigger)
             {
-                // Call triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface = new Interfaces($this->db);
-                $result = $interface->run_triggers('PROJECT_DELETE', $this, $user, $langs, $conf);
+                // Call trigger
+                $result=$this->call_trigger('PROJECT_DELETE',$user);
                 if ($result < 0)
                 {
                     $error++;
-            		foreach ($interface->errors as $errmsg ) {
-            			dol_syslog(get_class($this) . "::delete " . $errmsg, LOG_ERR);
-            			$this->errors[] =$errmsg;
-            		}
+                    if (! empty($interface->errors)) 
+                    {
+                		foreach ($interface->errors as $errmsg ) {
+                			dol_syslog(get_class($this) . "::delete " . $errmsg, LOG_ERR);
+                			$this->errors[] =$errmsg;
+                		}
+                    }
                 }
                 // End call triggers
             }
@@ -587,16 +589,10 @@ class Project extends CommonObject
             $resql = $this->db->query($sql);
             if ($resql)
             {
-                // Appel des triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface = new Interfaces($this->db);
-                $result = $interface->run_triggers('PROJECT_VALIDATE', $this, $user, $langs, $conf);
-                if ($result < 0)
-                {
-                    $error++;
-                    $this->errors = $interface->errors;
-                }
-                // Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('PROJECT_VALIDATE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 
                 if (!$error)
                 {
@@ -648,16 +644,10 @@ class Project extends CommonObject
             $resql = $this->db->query($sql);
             if ($resql)
             {
-                // Appel des triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface = new Interfaces($this->db);
-                $result = $interface->run_triggers('PROJECT_CLOSE', $this, $user, $langs, $conf);
-                if ($result < 0)
-                {
-                    $error++;
-                    $this->errors = $interface->errors;
-                }
-                // Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('PROJECT_CLOSE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 
                 if (!$error)
                 {
diff --git a/htdocs/projet/class/task.class.php b/htdocs/projet/class/task.class.php
index 697d773f02c..5dc3a6fd52e 100644
--- a/htdocs/projet/class/task.class.php
+++ b/htdocs/projet/class/task.class.php
@@ -133,11 +133,9 @@ class Task extends CommonObject
 
             if (! $notrigger)
             {
-                // Call triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface=new Interfaces($this->db);
-                $result=$interface->run_triggers('TASK_CREATE',$this,$user,$langs,$conf);
-                if ($result < 0) { $error++; $this->errors=$interface->errors; }
+                // Call trigger
+                $result=$this->call_trigger('TASK_CREATE',$user);
+                if ($result < 0) { $error++; }            
                 // End call triggers
             }
         }
@@ -303,11 +301,9 @@ class Task extends CommonObject
         {
             if (! $notrigger)
             {
-                // Call triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface=new Interfaces($this->db);
-                $result=$interface->run_triggers('TASK_MODIFY',$this,$user,$langs,$conf);
-                if ($result < 0) { $error++; $this->errors=$interface->errors; }
+                // Call trigger
+                $result=$this->call_trigger('TASK_MODIFY',$user);
+                if ($result < 0) { $error++; }            
                 // End call triggers
             }
         }
@@ -394,11 +390,9 @@ class Task extends CommonObject
         {
             if (! $notrigger)
             {
-                // Call triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface=new Interfaces($this->db);
-                $result=$interface->run_triggers('TASK_DELETE',$this,$user,$langs,$conf);
-                if ($result < 0) { $error++; $this->errors=$interface->errors; }
+                // Call trigger
+                $result=$this->call_trigger('TASK_DELETE',$user);
+                if ($result < 0) { $error++; }            
                 // End call triggers
             }
         }
@@ -744,11 +738,12 @@ class Task extends CommonObject
     {
         global $conf,$langs;
 
-		$error=0;
         $ret = 0;
 
         // Clean parameters
         if (isset($this->timespent_note)) $this->timespent_note = trim($this->timespent_note);
+        
+        $this->db->begin();
 
         $sql = "INSERT INTO ".MAIN_DB_PREFIX."projet_task_time (";
         $sql.= "fk_task";
@@ -772,11 +767,9 @@ class Task extends CommonObject
 
             if (! $notrigger)
             {
-                // Call triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface=new Interfaces($this->db);
-                $result=$interface->run_triggers('TASK_TIMESPENT_CREATE',$this,$user,$langs,$conf);
-                if ($result < 0) { $error++; $this->errors=$interface->errors; }
+                // Call trigger
+                $result=$this->call_trigger('TASK_TIMESPENT_CREATE',$user);
+                if ($result < 0) { $this->db->rollback(); $ret=-1; }            
                 // End call triggers
             }
         }
@@ -784,6 +777,7 @@ class Task extends CommonObject
         {
             $this->error=$this->db->lasterror();
             dol_syslog(get_class($this)."::addTimeSpent error -1 ".$this->error,LOG_ERR);
+            $this->db->rollback();
             $ret = -1;
         }
 
@@ -798,6 +792,7 @@ class Task extends CommonObject
             {
                 $this->error=$this->db->lasterror();
                 dol_syslog(get_class($this)."::addTimeSpent error -2 ".$this->error, LOG_ERR);
+                $this->db->rollback();
                 $ret = -2;
             }
         }
@@ -813,10 +808,12 @@ class Task extends CommonObject
             {
                 $this->error=$this->db->lasterror();
                 dol_syslog(get_class($this)."::addTimeSpent error -2 ".$this->error, LOG_ERR);
+                $this->db->rollback();
                 $ret = -2;
             }
         }
 
+        if ($ret >=0) $this->db->commit();
         return $ret;
     }
 
@@ -879,11 +876,12 @@ class Task extends CommonObject
     {
     	global $conf,$langs;
 
-    	$error=0;
         $ret = 0;
 
         // Clean parameters
         if (isset($this->timespent_note)) $this->timespent_note = trim($this->timespent_note);
+        
+        $this->db->begin();
 
         $sql = "UPDATE ".MAIN_DB_PREFIX."projet_task_time SET";
         $sql.= " task_date = '".$this->db->idate($this->timespent_date)."',";
@@ -897,19 +895,23 @@ class Task extends CommonObject
         {
             if (! $notrigger)
             {
-                // Call triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface=new Interfaces($this->db);
-                $result=$interface->run_triggers('TASK_TIMESPENT_MODIFY',$this,$user,$langs,$conf);
-                if ($result < 0) { $error++; $this->errors=$interface->errors; }
+                // Call trigger
+                $result=$this->call_trigger('TASK_TIMESPENT_MODIFY',$user);
+                if ($result < 0) 
+                { 
+                    $this->db->rollback(); 
+                    $ret = -1; 
+                }
+                else $ret = 1;            
                 // End call triggers
             }
-            $ret = 1;
+            else $ret = 1;
         }
         else
         {
             $this->error=$this->db->lasterror();
             dol_syslog(get_class($this)."::updateTimeSpent error -1 ".$this->error,LOG_ERR);
+            $this->db->rollback();
             $ret = -1;
         }
 
@@ -925,11 +927,13 @@ class Task extends CommonObject
             if (! $this->db->query($sql) )
             {
                 $this->error=$this->db->lasterror();
+                $this->db->rollback();
                 dol_syslog(get_class($this)."::addTimeSpent error -2 ".$this->error, LOG_ERR);
                 $ret = -2;
             }
         }
 
+        if ($ret >= 0) $this->db->commit();
         return $ret;
     }
 
@@ -959,11 +963,9 @@ class Task extends CommonObject
         {
             if (! $notrigger)
             {
-                // Call triggers
-                include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-                $interface=new Interfaces($this->db);
-                $result=$interface->run_triggers('TASK_TIMESPENT_DELETE',$this,$user,$langs,$conf);
-                if ($result < 0) { $error++; $this->errors=$interface->errors; }
+                // Call trigger
+                $result=$this->call_trigger('TASK_TIMESPENT_DELETE',$user);
+                if ($result < 0) { $error++; }            
                 // End call triggers
             }
         }
diff --git a/htdocs/projet/fiche.php b/htdocs/projet/fiche.php
index 123b4a611b4..00fdf65d15a 100644
--- a/htdocs/projet/fiche.php
+++ b/htdocs/projet/fiche.php
@@ -340,7 +340,8 @@ if (empty($reshook))
 	    else
 	    {
 	        dol_syslog($object->error,LOG_DEBUG);
-	        $mesg='<div class="error">'.$langs->trans("CantRemoveProject").'</div>';
+	        setEventMessage($object->error,'errors');
+	        setEventMessage($object->errors,'errors');
 	    }
 	}
 
diff --git a/htdocs/projet/tasks.php b/htdocs/projet/tasks.php
index 356eed55e6d..7c94401f861 100644
--- a/htdocs/projet/tasks.php
+++ b/htdocs/projet/tasks.php
@@ -130,6 +130,11 @@ if ($action == 'createtask' && $user->rights->projet->creer)
 			if ($taskid > 0)
 			{
 				$result = $task->add_contact($_POST["userid"], 'TASKEXECUTIVE', 'internal');
+			} 
+			else 
+			{
+			    setEventMessage($task->error,'errors');
+			    setEventMessage($task->errors,'errors');
 			}
 		}
 
@@ -193,6 +198,8 @@ if ($id > 0 || ! empty($ref))
 
 	$head=project_prepare_head($object);
 	dol_fiche_head($head, $tab, $langs->trans("Project"),0,($object->public?'projectpub':'project'));
+	
+	dol_htmloutput_mesg();
 
 	$param=($mode=='mine'?'&mode=mine':'');
 
diff --git a/htdocs/projet/tasks/task.php b/htdocs/projet/tasks/task.php
index dd83cf57d8f..14339291c4c 100644
--- a/htdocs/projet/tasks/task.php
+++ b/htdocs/projet/tasks/task.php
@@ -91,6 +91,12 @@ if ($action == 'update' && ! $_POST["cancel"] && $user->rights->projet->creer)
 		$ret = $extrafields->setOptionalsFromPost($extralabels,$object);
 
 		$result=$object->update($user);
+		
+		if ($result < 0)
+		{
+		    setEventMessage($object->error,'errors');
+		    setEventMessage($object->errors,'errors');
+		}
 	}
 	else
 	{
diff --git a/htdocs/projet/tasks/time.php b/htdocs/projet/tasks/time.php
index f6c5a1840ea..f6430ff4f55 100644
--- a/htdocs/projet/tasks/time.php
+++ b/htdocs/projet/tasks/time.php
@@ -140,7 +140,7 @@ if ($action == 'confirm_delete' && $confirm == "yes" && $user->rights->projet->c
 	$object->fetchTimeSpent($_GET['lineid']);
 	$result = $object->delTimeSpent($user);
 
-	if (!$result)
+	if ($result < 0)
 	{
 		$langs->load("errors");
 		setEventMessage($langs->trans($object->error),'errors');
diff --git a/htdocs/user/class/user.class.php b/htdocs/user/class/user.class.php
index ac4c830fed2..b7e492de58e 100644
--- a/htdocs/user/class/user.class.php
+++ b/htdocs/user/class/user.class.php
@@ -667,12 +667,10 @@ class User extends CommonObject
 		dol_syslog(get_class($this)."::setstatus sql=".$sql);
 		if ($result)
 		{
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('USER_ENABLEDISABLE',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('USER_ENABLEDISABLE',$user);
+            if ($result < 0) { $error++; }            
+            // End call triggers
 		}
 
 		if ($error)
@@ -759,13 +757,16 @@ class User extends CommonObject
 
 		if (! $error)
 		{
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('USER_DELETE',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
-
+            // Call trigger
+            $result=$this->call_trigger('USER_DELETE',$user);
+	        if ($result < 0) 
+	        { 
+	            $error++;
+	            $this->db->rollback();
+			    return -1;            
+	        }            
+            // End call triggers
+		    
 			$this->db->commit();
 			return 1;
 		}
@@ -866,12 +867,10 @@ class User extends CommonObject
 
 					if (! $notrigger)
 					{
-						// Appel des triggers
-						include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-						$interface = new Interfaces($this->db);
-						$result = $interface->run_triggers('USER_CREATE',$this,$user,$langs,$conf);
-						if ($result < 0) { $error++; $this->errors=$interface->errors; }
-						// Fin appel triggers
+                        // Call trigger
+                        $result=$this->call_trigger('USER_CREATE',$user);
+            	        if ($result < 0) { $error++; }            
+                        // End call triggers
 					}
 
 					if (! $error)
@@ -881,7 +880,7 @@ class User extends CommonObject
 					}
 					else
 					{
-						$this->error=$interface->error;
+						//$this->error=$interface->error;
 						dol_syslog(get_class($this)."::create ".$this->error, LOG_ERR);
 						$this->db->rollback();
 						return -3;
@@ -953,13 +952,11 @@ class User extends CommonObject
 			dol_syslog(get_class($this)."::create_from_contact sql=".$sql, LOG_DEBUG);
 			if ($resql)
 			{
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface = new Interfaces($this->db);
-				$result = $interface->run_triggers('USER_CREATE_FROM_CONTACT',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; }
-				// Fin appel triggers
-
+                // Call trigger
+                $result=$this->call_trigger('USER_CREATE_FROM_CONTACT',$user);
+                if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+                // End call triggers
+			    
 				$this->db->commit();
 				return $this->id;
 			}
@@ -1271,12 +1268,10 @@ class User extends CommonObject
 
 			if (! $error && ! $notrigger)
 			{
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('USER_MODIFY',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; }
-				// Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('USER_MODIFY',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 			}
 
 			if (! $error)
@@ -1286,7 +1281,6 @@ class User extends CommonObject
 			}
 			else
 			{
-				$this->error=$this->db->lasterror();
 				dol_syslog(get_class($this)."::update error=".$this->error,LOG_ERR);
 				$this->db->rollback();
 				return -1;
@@ -1367,6 +1361,8 @@ class User extends CommonObject
 		{
 		    if (! is_object($this->oldcopy)) $this->oldcopy=dol_clone($this);
 
+		    $this->db->begin();
+		    
 		    $sql = "UPDATE ".MAIN_DB_PREFIX."user";
 			$sql.= " SET pass_crypted = '".$this->db->escape($password_crypted)."',";
 			$sql.= " pass_temp = null";
@@ -1420,23 +1416,24 @@ class User extends CommonObject
 
 					if (! $error && ! $notrigger)
 					{
-						// Appel des triggers
-						include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-						$interface=new Interfaces($this->db);
-						$result=$interface->run_triggers('USER_NEW_PASSWORD',$this,$user,$langs,$conf);
-						if ($result < 0) $this->errors=$interface->errors;
-						// Fin appel triggers
+                        // Call trigger
+                        $result=$this->call_trigger('USER_NEW_PASSWORD',$user);
+                        if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+                        // End call triggers
 					}
-
+                    
+					$this->db->commit();
 					return $this->pass;
 				}
 				else
 				{
+				    $this->db->rollback();
 					return 0;
 				}
 			}
 			else
 			{
+			    $this->db->rollback();
 				dol_print_error($this->db);
 				return -1;
 			}
@@ -1677,12 +1674,10 @@ class User extends CommonObject
 			{
 			    $this->newgroupid=$group;
 
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('USER_SETINGROUP',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; }
-				// Fin appel triggers
+			    // Call trigger
+                $result=$this->call_trigger('USER_SETINGROUP',$user);
+	            if ($result < 0) { $error++; }            
+                // End call triggers
 			}
 
 			if (! $error)
@@ -1692,7 +1687,6 @@ class User extends CommonObject
 			}
 			else
 			{
-				$this->error=$interface->error;
 				dol_syslog(get_class($this)."::SetInGroup ".$this->error, LOG_ERR);
 				$this->db->rollback();
 				return -2;
@@ -1735,12 +1729,10 @@ class User extends CommonObject
 			{
 			    $this->oldgroupid=$group;
 
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('USER_REMOVEFROMGROUP',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; }
-				// Fin appel triggers
+			    // Call trigger
+                $result=$this->call_trigger('USER_REMOVEFROMGROUP',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 			}
 
 			if (! $error)
diff --git a/htdocs/user/class/usergroup.class.php b/htdocs/user/class/usergroup.class.php
index b43794a4b64..7a94ccc0a0d 100644
--- a/htdocs/user/class/usergroup.class.php
+++ b/htdocs/user/class/usergroup.class.php
@@ -547,12 +547,10 @@ class UserGroup extends CommonObject
 		$result=$this->db->query($sql);
 		if ($result)
 		{
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('GROUP_DELETE',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('GROUP_DELETE',$user);
+            if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+            // End call triggers
 
 			$this->db->commit();
 			return 1;
@@ -583,6 +581,8 @@ class UserGroup extends CommonObject
 		$entity=$this->entity;
 		if (! empty($conf->multicompany->enabled) && $conf->entity == 1) $entity=$this->entity;
 
+		$this->db->begin();
+		
 		$sql = "INSERT INTO ".MAIN_DB_PREFIX."usergroup (";
 		$sql.= "datec";
 		$sql.= ", nom";
@@ -603,18 +603,18 @@ class UserGroup extends CommonObject
 
 			if (! $notrigger)
 			{
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('GROUP_CREATE',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; }
-				// Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('GROUP_CREATE',$user);
+                if ($result < 0) { $error++; $this->db->rollback(); return -1; }            
+                // End call triggers
 			}
 
+			$this->db->commit();
 			return $this->id;
 		}
 		else
 		{
+		    $this->db->rollback();
 			$this->error=$this->db->lasterror();
 			dol_syslog(get_class($this)."::create ".$this->error,LOG_ERR);
 			return -1;
@@ -639,6 +639,8 @@ class UserGroup extends CommonObject
 			$entity=$this->entity;
 		}
 
+		$this->db->begin();
+		
 		$sql = "UPDATE ".MAIN_DB_PREFIX."usergroup SET ";
 		$sql.= " nom = '" . $this->db->escape($this->nom) . "'";
 		$sql.= ", entity = " . $this->db->escape($entity);
@@ -651,19 +653,26 @@ class UserGroup extends CommonObject
 		{
 			if (! $notrigger)
 			{
-				// Appel des triggers
-				include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-				$interface=new Interfaces($this->db);
-				$result=$interface->run_triggers('GROUP_MODIFY',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; }
-				// Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('GROUP_MODIFY',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 			}
 
-			if (! $error) return 1;
-			else return -$error;
+			if (! $error) 
+			{
+			    $this->db->commit();
+			    return 1;
+			}
+			else
+			{
+			    $this->db->rollback();
+			    return -$error;
+			}
 		}
 		else
 		{
+		    $this->db->rollback();
 			dol_print_error($this->db);
 			return -1;
 		}