diff --git a/ChangeLog b/ChangeLog
index e3c9b80c3cd..da781f4bb5c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -24,6 +24,7 @@ For users:
 - Fix: [ bug #1508 ] STOCK_MOVEMENT does not show trigger error message
 - Fix: [ bug #1501 ] DEPLACEMENT_CREATE trigger do not intercept trigger action
 - Fix: [ bug #1506, #1507 ] ECM trigger error problem
+- Fix: [ bug #1469 ] Triggers CONTACT_MODIFY and CONTACT_DELETE duplicates error message
 
 
 
diff --git a/htdocs/contact/class/contact.class.php b/htdocs/contact/class/contact.class.php
index 95f949b123f..7858f81dcf9 100644
--- a/htdocs/contact/class/contact.class.php
+++ b/htdocs/contact/class/contact.class.php
@@ -183,12 +183,10 @@ class Contact 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('CONTACT_CREATE',$this,$user,$langs,$conf);
-    			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-    			// Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('CONTACT_CREATE',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
             }
 
             if (! $error)
@@ -304,12 +302,10 @@ class Contact 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('CONTACT_MODIFY',$this,$user,$langs,$conf);
-				if ($result < 0) { $error++; $this->errors=$interface->errors; }
-				// Fin appel triggers
+                // Call trigger
+                $result=$this->call_trigger('CONTACT_MODIFY',$user);
+                if ($result < 0) { $error++; }            
+                // End call triggers
 			}
 
 			if (! $error)
@@ -319,7 +315,6 @@ class Contact extends CommonObject
 			}
 			else
 			{
-				$this->error=join(',',$this->errors);
 				dol_syslog(get_class($this)."::update Error ".$this->error,LOG_ERR);
 				$this->db->rollback();
 				return -$error;
@@ -777,14 +772,10 @@ class Contact 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('CONTACT_DELETE',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
-
-			if ($error) $this->error=join(',',$this->errors);
+            // Call trigger
+            $result=$this->call_trigger('CONTACT_DELETE',$user);
+            if ($result < 0) { $error++; }            
+            // End call triggers
 		}
 
 		if (! $error)
@@ -1067,12 +1058,10 @@ class Contact extends CommonObject
 		dol_syslog(get_class($this)."::setstatus", LOG_DEBUG);
 		if ($result)
 		{
-			// Appel des triggers
-			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
-			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('CONTACT_ENABLEDISABLE',$this,$user,$langs,$conf);
-			if ($result < 0) { $error++; $this->errors=$interface->errors; }
-			// Fin appel triggers
+            // Call trigger
+            $result=$this->call_trigger('CONTACT_ENABLEDISABLE',$user);
+            if ($result < 0) { $error++; }            
+            // End call triggers
 		}
 
 		if ($error)
diff --git a/htdocs/contact/fiche.php b/htdocs/contact/fiche.php
index 9cb52738bb8..0d8a26cf81f 100644
--- a/htdocs/contact/fiche.php
+++ b/htdocs/contact/fiche.php
@@ -138,19 +138,30 @@ if (empty($reshook))
     if ($action == 'disable')
     {
     	$object->fetch($id);
-    	$object->setstatus(0);
-    	header("Location: ".$_SERVER['PHP_SELF'].'?id='.$id);
-    	exit;
+    	if ($object->setstatus(0)<0)
+    	{
+    	    setEventMessage($object->error,'errors');
+    	}
+    	else 
+    	{
+        	header("Location: ".$_SERVER['PHP_SELF'].'?id='.$id);
+        	exit;    	    
+    	}
     }
 
     // Confirmation activation
     if ($action == 'enable')
     {
     	$object->fetch($id);
-    	$object->setstatus(1);
-    	header("Location: ".$_SERVER['PHP_SELF'].'?id='.$id);
-    	exit;
-
+        	if ($object->setstatus(1)<0)
+    	{
+    	    setEventMessage($object->error,'errors');
+    	}
+    	else 
+    	{
+        	header("Location: ".$_SERVER['PHP_SELF'].'?id='.$id);
+        	exit;    	    
+    	}    	
     }
 
     // Add contact
@@ -235,7 +246,8 @@ if (empty($reshook))
         }
         else
         {
-            $error=$object->error; $errors=$object->errors;
+            setEventMessage($object->error,'errors');
+            setEventMessage($object->errors,'errors');
         }
     }
 
@@ -295,7 +307,8 @@ if (empty($reshook))
             }
             else
             {
-                $error=$object->error; $errors=$object->errors;
+                setEventMessage($object->error,'errors');
+                setEventMessage($object->errors,'errors');
                 $action = 'edit';
             }
         }
@@ -367,6 +380,8 @@ else
 
         $title = (! empty($conf->global->SOCIETE_ADDRESSES_MANAGEMENT) ? $langs->trans("Contacts") : $langs->trans("ContactsAddresses"));
         dol_fiche_head($head, 'card', $title, 0, 'contact');
+        
+        dol_htmloutput_events();
     }
 
     if ($user->rights->societe->contact->creer)
diff --git a/htdocs/core/triggers/interface_90_all_Demo.class.php-NORUN b/htdocs/core/triggers/interface_90_all_Demo.class.php-NORUN
index 25d7bbb8196..8bc4e42ed3f 100644
--- a/htdocs/core/triggers/interface_90_all_Demo.class.php-NORUN
+++ b/htdocs/core/triggers/interface_90_all_Demo.class.php-NORUN
@@ -211,6 +211,10 @@ class InterfaceDemo
         {
             dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
         }
+        elseif ($action == 'CONTACT_ENABLEDISABLE')
+        {
+            dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
+        }
 
         // Products
         elseif ($action == 'PRODUCT_CREATE')