diff --git a/htdocs/core/ajax/ajaxdirpreview.php b/htdocs/core/ajax/ajaxdirpreview.php
index 024e62dbf27..1460d87bfba 100644
--- a/htdocs/core/ajax/ajaxdirpreview.php
+++ b/htdocs/core/ajax/ajaxdirpreview.php
@@ -61,8 +61,8 @@ if (! isset($mode) || $mode != 'noajax')    // For ajax call
     $result=$ecmdir->fetch($section);
     if (! $result > 0)
     {
-        dol_print_error($db,$ecmdir->error);
-        exit;
+        //dol_print_error($db,$ecmdir->error);
+        //exit;
     }
 }
 else    // For no ajax call
diff --git a/htdocs/core/ajax/ajaxdirtree.php b/htdocs/core/ajax/ajaxdirtree.php
index 9de59a527d1..21487924b91 100644
--- a/htdocs/core/ajax/ajaxdirtree.php
+++ b/htdocs/core/ajax/ajaxdirtree.php
@@ -78,7 +78,7 @@ $userstatic=new User($db);
 $form=new Form($db);
 $ecmdirstatic = new EcmDirectory($db);
 
-// Load full tree. We will use it to define nbofsubdir and nboffilesinsubdir
+// Load full tree from database. We will use it to define nbofsubdir and nboffilesinsubdir
 if (empty($sqltree)) $sqltree=$ecmdirstatic->get_full_arbo(0);
 
 // Try to find key into $sqltree
@@ -93,13 +93,13 @@ foreach($sqltree as $keycursor => $val)
 }
 
 
-if( file_exists($fullpathselecteddir) )
+if (file_exists($fullpathselecteddir))
 {
 	$files = @scandir($fullpathselecteddir);
     if ($files)
     {
     	natcasesort($files);
-    	if( count($files) > 2 )    /* The 2 accounts for . and .. */
+    	if ( count($files) > 2 )    /* The 2 accounts for . and .. */
     	{
     		echo "<ul class=\"ecmjqft\" style=\"display: none;\">\n";
 
@@ -111,16 +111,27 @@ if( file_exists($fullpathselecteddir) )
     	        $nbofsubdir=0;
     	        $nboffilesinsubdir=0;
 
-    		    // Try to find key into $sqltree
     	        $val=array();
 
+    	        // Loop on all database entries (sqltree) to find the one matching the subdir found into dir to scan
 		        foreach($sqltree as $key => $tmpval)
 		        {
-    	            //print "-- ".$val['fullrelativename']." vs ".(($selecteddir != '/'?$selecteddir.'/':'').$file).'<br>';
-		            if ($tmpval['fullrelativename'] == (($selecteddir != '/'?$selecteddir.'/':'').$file))
+    	            //print "-- key=".$key." - ".$val['fullrelativename']." vs ".(($selecteddir != '/'?$selecteddir.'/':'').$file).'<br>';
+		        	if ($tmpval['fullrelativename'] == (($selecteddir != '/'?$selecteddir.'/':'').$file))		// We found equivalent record into database
 		            {
 		                $val=$tmpval;
-                        $resarray=tree_showpad($sqltree,$key,1);
+		                $resarray=tree_showpad($sqltree,$key,1);
+
+		                // Refresh cache for this subdir
+		            	if (isset($val['cachenbofdoc']) && $val['cachenbofdoc'] < 0)	// Cache is not up to date, so we update it for this directory t
+		            	{
+		            		$result=$ecmdirstatic->fetch($val['id']);
+		            		$ecmdirstatic->ref=$ecmdirstatic->label;
+
+		            		$result=$ecmdirstatic->refreshcachenboffile(0);
+		            		$val['cachenbofdoc']=$result;
+		            	}
+
                         $a=$resarray[0];
                         $nbofsubdir=$resarray[1];
                         $nboffilesinsubdir=$resarray[2];
@@ -128,10 +139,18 @@ if( file_exists($fullpathselecteddir) )
 		            }
 		        }
 
-		        //if (file_exists($fullpathselecteddir . $file) && $file != '.' && $file != '..' && is_dir($fullpathselecteddir . $file))
-    		    if ($file != '.' && $file != '..' && ((! empty($val['fullrelativename']) && $val['id'] >= 0) || dol_is_dir($fullpathselecteddir . $file)))
+    		    //print 'modulepart='.$modulepart.' fullpathselecteddir='.$fullpathselecteddir.' - val[fullrelativename] (in database)='.$val['fullrelativename'].' - val[id]='.$val['id'].' - is_dir='.dol_is_dir($fullpathselecteddir . $file).' - file='.$file."\n";
+    		    if ($file != '.' && $file != '..' && ((! empty($val['fullrelativename']) && $val['id'] >= 0) || dol_is_dir($fullpathselecteddir . (preg_match('/\/$/',$fullpathselecteddir)?'':'/') . $file)))
     		    {
-    				print '<li class="directory collapsed">';
+					if (empty($val['fullrelativename']))	// If we did not find entry into database, but found a directory (dol_is_dir was ok at previous test)
+					{
+    		    		$val['fullrelativename']=$file; $val['id']=0;
+    		    		$val['label']=$file;
+    		    		$val['description']='';
+    		    		$nboffilesinsubdir=$langs->trans("Unknown");
+					}
+
+		        	print '<li class="directory collapsed">';
 
     				print "<a class=\"fmdirlia jqft ecmjqft\" href=\"#\" rel=\"" . dol_escape_htmltag($val['fullrelativename'].'/') . "\" id=\"fmdirlia_id_".$val['id']."\"";
     				print " onClick=\"loadandshowpreview('".dol_escape_js($val['fullrelativename'])."',".$val['id'].")\">";
@@ -148,10 +167,10 @@ if( file_exists($fullpathselecteddir) )
 
     				// Nb of docs
     				print '<td align="right">';
-    				print isset($val['cachenbofdoc'])?$val['cachenbofdoc']:'&nbsp;';
+    				print (isset($val['cachenbofdoc']) && $val['cachenbofdoc']  >= 0)?$val['cachenbofdoc']:'&nbsp;';
     				print '</td>';
     				print '<td align="left">';
-    				if ($nbofsubdir && $nboffilesinsubdir) print '<font color="#AAAAAA">+'.$nboffilesinsubdir.'</font> ';
+    				if ($nbofsubdir > 0  && $nboffilesinsubdir > 0) print '<font color="#AAAAAA">+'.$nboffilesinsubdir.'</font> ';
     				print '</td>';
 
     				// Edit link
@@ -163,16 +182,16 @@ if( file_exists($fullpathselecteddir) )
 
     				// Info
     				print '<td align="right" width="18">';
-    				$userstatic->id=$val['fk_user_c'];
-    				$userstatic->lastname=$val['login_c'];
+    				$userstatic->id=isset($val['fk_user_c'])?$val['fk_user_c']:0;
+    				$userstatic->lastname=isset($val['login_c'])?$val['login_c']:0;
     				$htmltooltip='<b>'.$langs->trans("ECMSection").'</b>: '.$val['label'].'<br>';
     				$htmltooltip='<b>'.$langs->trans("Type").'</b>: '.$langs->trans("ECMSectionManual").'<br>';
     				$htmltooltip.='<b>'.$langs->trans("ECMCreationUser").'</b>: '.$userstatic->getNomUrl(1).'<br>';
-    				$htmltooltip.='<b>'.$langs->trans("ECMCreationDate").'</b>: '.dol_print_date($val['date_c'],"dayhour").'<br>';
+    				$htmltooltip.='<b>'.$langs->trans("ECMCreationDate").'</b>: '.(isset($val['date_c'])?dol_print_date($val['date_c'],"dayhour"):$langs->trans("NeedRefresh")).'<br>';
     				$htmltooltip.='<b>'.$langs->trans("Description").'</b>: '.$val['description'].'<br>';
-    				$htmltooltip.='<b>'.$langs->trans("ECMNbOfFilesInDir").'</b>: '.$val['cachenbofdoc'].'<br>';
-    				if ($nbofsubdir) $htmltooltip.='<b>'.$langs->trans("ECMNbOfFilesInSubDir").'</b>: '.$nboffilesinsubdir;
-    				else $htmltooltip.='<b>'.$langs->trans("ECMNbOfSubDir").'</b>: '.$nbofsubdir.'<br>';
+    				$htmltooltip.='<b>'.$langs->trans("ECMNbOfFilesInDir").'</b>: '.((isset($val['cachenbofdoc']) && $val['cachenbofdoc'] >= 0)?$val['cachenbofdoc']:$langs->trans("NeedRefresh")).'<br>';
+    				if ($nboffilesinsubdir > 0) $htmltooltip.='<b>'.$langs->trans("ECMNbOfFilesInSubDir").'</b>: '.$nboffilesinsubdir;
+    				else $htmltooltip.='<b>'.$langs->trans("ECMNbOfSubDir").'</b>: '.($nbofsubdir >= 0 ? $nbofsubdir : $langs->trans("NeedRefresh")).'<br>';
     				print $form->textwithpicto('',$htmltooltip,1,"info");
     				print "</td>";
 
diff --git a/htdocs/core/lib/treeview.lib.php b/htdocs/core/lib/treeview.lib.php
index 0b72e156b40..06eda753b3d 100644
--- a/htdocs/core/lib/treeview.lib.php
+++ b/htdocs/core/lib/treeview.lib.php
@@ -101,8 +101,7 @@ function tree_showpad(&$fulltree,$key,$silent=0)
 				if ($fulltree[$key2]['level'] > $pos)
 				{
 					$nbofdirinsub++;
-					if (! empty($fulltree[$key2]['cachenbofdoc']))
-						$nbofdocinsub+=$fulltree[$key2]['cachenbofdoc'];
+					if (isset($fulltree[$key2]['cachenbofdoc']) && $fulltree[$key2]['cachenbofdoc'] > 0) $nbofdocinsub+=$fulltree[$key2]['cachenbofdoc'];
 				}
 				if ($fulltree[$key2]['level'] == $pos)
 				{
diff --git a/htdocs/ecm/class/ecmdirectory.class.php b/htdocs/ecm/class/ecmdirectory.class.php
index 6a20cca9426..e0519073386 100644
--- a/htdocs/ecm/class/ecmdirectory.class.php
+++ b/htdocs/ecm/class/ecmdirectory.class.php
@@ -38,7 +38,7 @@ class EcmDirectory // extends CommonObject
 	var $label;
 	var $fk_parent;
 	var $description;
-	var $cachenbofdoc;
+	var $cachenbofdoc=-1;	// By default cache initialized with value 'not calculated'
 	var $date_c;
 	var $date_m;
 
@@ -77,7 +77,6 @@ class EcmDirectory // extends CommonObject
 		$this->label=dol_sanitizeFileName(trim($this->label));
 		$this->fk_parent=trim($this->fk_parent);
 		$this->description=trim($this->description);
-		if (! $this->cachenbofdoc) $this->cachenbofdoc=0;
 		$this->date_c=$now;
 		$this->fk_user_c=$user->id;
 		if ($this->fk_parent <= 0) $this->fk_parent=0;
@@ -132,7 +131,7 @@ class EcmDirectory // extends CommonObject
 			$sql.= " '".$conf->entity."',";
 			$sql.= " '".$this->fk_parent."',";
 			$sql.= " '".$this->db->escape($this->description)."',";
-			$sql.= " ".($this->cachenbofdoc).",";
+			$sql.= " ".$this->cachenbofdoc.",";
 			$sql.= " '".$this->db->idate($this->date_c)."',";
 			$sql.= " '".$this->fk_user_c."'";
 			$sql.= ")";
@@ -544,8 +543,7 @@ class EcmDirectory // extends CommonObject
 		$sql.= " c.date_c,";
 		$sql.= " u.login as login_c,";
 		$sql.= " ca.rowid as rowid_fille";
-		$sql.= " FROM ".MAIN_DB_PREFIX."user as u";
-		$sql.= ", ".MAIN_DB_PREFIX."ecm_directories as c";
+		$sql.= " FROM ".MAIN_DB_PREFIX."user as u, ".MAIN_DB_PREFIX."ecm_directories as c";
 		$sql.= " LEFT JOIN ".MAIN_DB_PREFIX."ecm_directories as ca";
 		$sql.= " ON c.rowid = ca.fk_parent";
 		$sql.= " WHERE c.fk_user_c = u.rowid";
@@ -650,10 +648,10 @@ class EcmDirectory // extends CommonObject
 	}
 
 	/**
-	 *	Refresh value for cachenboffile
+	 *	Refresh value for cachenboffile. This scan and count files into directory.
 	 *
-	 *  @param		int		$all       	0=refresh this id , 1=refresh this entity
-	 * 	@return		int					<0 if KO, Nb of files in directory if OK
+	 *  @param		int		$all       	0=refresh record using this->id , 1=refresh record using this->entity
+	 * 	@return		int					-1 if KO, Nb of files in directory if OK
 	 */
 	function refreshcachenboffile($all=0)
 	{
diff --git a/htdocs/ecm/index.php b/htdocs/ecm/index.php
index 6cefad2a4d4..17b00274582 100644
--- a/htdocs/ecm/index.php
+++ b/htdocs/ecm/index.php
@@ -205,7 +205,7 @@ if ($action == 'refreshmanual')
     $diroutputslash.='/';
 
     // Scan directory tree on disk
-    $disktree=dol_dir_list($conf->ecm->dir_output,'directories',1,'','','','',0);
+    $disktree=dol_dir_list($conf->ecm->dir_output,'directories',1,'','^temp$','','',0);
 
     // Scan directory tree in database
     $sqltree=$ecmdirstatic->get_full_arbo(0);
@@ -283,7 +283,7 @@ if ($action == 'refreshmanual')
 
                 $txt="We create directory ".$ecmdirtmp->label." with parent ".$fk_parent;
                 dol_syslog($txt);
-                //print $txt."<br>\n";
+                //print $ecmdirtmp->cachenbofdoc."<br>\n";exit;
                 $id = $ecmdirtmp->create($user);
                 if ($id > 0)
                 {
@@ -309,7 +309,8 @@ if ($action == 'refreshmanual')
         }
     }
 
-    $sql="UPDATE ".MAIN_DB_PREFIX."ecm_directories set cachenbofdoc=0 WHERE cachenbofdoc < 0";
+    $sql="UPDATE ".MAIN_DB_PREFIX."ecm_directories set cachenbofdoc = -1 WHERE cachenbofdoc < 0";	// If pb into cahce counting, we set to value -1 = "unknown"
+    dol_syslog("sql = ".$sql);
     $db->query($sql);
 
     // If a directory was added, the fulltree array is not correctly completed and sorted, so we clean
@@ -693,7 +694,7 @@ if (empty($action) || $action == 'file_manager' || preg_match('/refresh/i',$acti
     			$result=$ecmdirstatic->fetch($val['id']);
     			$ecmdirstatic->ref=$ecmdirstatic->label;
 
-    			$result=$ecmdirstatic->refreshcachenboffile();
+    			$result=$ecmdirstatic->refreshcachenboffile(0);
     			$val['cachenbofdoc']=$result;
     		}
 
diff --git a/htdocs/install/mysql/migration/3.2.0-3.3.0.sql b/htdocs/install/mysql/migration/3.2.0-3.3.0.sql
index 86f7a852f11..001c21dad2f 100755
--- a/htdocs/install/mysql/migration/3.2.0-3.3.0.sql
+++ b/htdocs/install/mysql/migration/3.2.0-3.3.0.sql
@@ -84,3 +84,4 @@ ALTER TABLE llx_facturedet_rec ADD COLUMN label varchar(255) DEFAULT NULL AFTER
 ALTER TABLE llx_accountingaccount  ADD COLUMN active tinyint DEFAULT 1 NOT NULL AFTER label;
 
 ALTER TABLE llx_actioncomm MODIFY elementtype VARCHAR(32);
+