diff --git a/htdocs/exports/export.class.php b/htdocs/exports/export.class.php
index cfd28b86c91..ce0a3540187 100644
--- a/htdocs/exports/export.class.php
+++ b/htdocs/exports/export.class.php
@@ -187,16 +187,6 @@ class Export
             else $i++;
 			$newfield=$key.' as '.$value;
 
-			// Cas particulier
-/*            if ($this->array_export_module[$indice]->name == 'Banque')
-			{
-				// Cas special du debit et credit
-				if ($value=='credit' || $value=='debit')
-				{
-					$newfield='IF('.$key.'>0,'.$key.',NULL) as '.$value;
-				}
-			}
-*/
 			$sql.=$newfield;
         }
         $sql.=$this->array_export_sql_end[$indice];
@@ -213,49 +203,57 @@ class Export
 
             // Open file
             create_exdir($dirname);
-            $objmodel->open_file($dirname."/".$filename);
+            $result=$objmodel->open_file($dirname."/".$filename);
 
-            // Genere en-tete
-            $objmodel->write_header($langs);
-
-            // Genere ligne de titre
-            $objmodel->write_title($this->array_export_fields[$indice],$array_selected,$langs);
-
-			while ($objp = $this->db->fetch_object($resql))
+			if ($result >= 0)
 			{
-				$var=!$var;
-                
-				// Process special operations
-				if (! empty($this->array_export_special[$indice]))
+	            // Genere en-tete
+	            $objmodel->write_header($langs);
+
+	            // Genere ligne de titre
+	            $objmodel->write_title($this->array_export_fields[$indice],$array_selected,$langs);
+
+				while ($objp = $this->db->fetch_object($resql))
 				{
-			        foreach ($this->array_export_special[$indice] as $key => $value)
-			        {
-						if (! array_key_exists($key, $array_selected)) continue;		// Field not selected
-						// Operation NULLIFNEG
-						if ($this->array_export_special[$indice][$key]=='NULLIFNEG')
-						{
-							$alias=$this->array_export_alias[$indice][$key];
-							if ($objp->$alias < 0) $objp->$alias='';
-						}
-						// Operation ZEROIFNEG
-						if ($this->array_export_special[$indice][$key]=='ZEROIFNEG')
-						{
-							$alias=$this->array_export_alias[$indice][$key];
-							if ($objp->$alias < 0) $objp->$alias='0';
+					$var=!$var;
+	                
+					// Process special operations
+					if (! empty($this->array_export_special[$indice]))
+					{
+				        foreach ($this->array_export_special[$indice] as $key => $value)
+				        {
+							if (! array_key_exists($key, $array_selected)) continue;		// Field not selected
+							// Operation NULLIFNEG
+							if ($this->array_export_special[$indice][$key]=='NULLIFNEG')
+							{
+								$alias=$this->array_export_alias[$indice][$key];
+								if ($objp->$alias < 0) $objp->$alias='';
+							}
+							// Operation ZEROIFNEG
+							if ($this->array_export_special[$indice][$key]=='ZEROIFNEG')
+							{
+								$alias=$this->array_export_alias[$indice][$key];
+								if ($objp->$alias < 0) $objp->$alias='0';
+							}
 						}
 					}
-				}
-				// end of special operation processing
-				
-				$objmodel->write_record($this->array_export_alias[$indice],$array_selected,$objp);
-            }
-            
-            // Genere en-tete
-            $objmodel->write_footer($langs);
-            
-            // Close file
-            $objmodel->close_file();
-            
+					// end of special operation processing
+					
+					$objmodel->write_record($this->array_export_alias[$indice],$array_selected,$objp);
+	            }
+	            
+	            // Genere en-tete
+	            $objmodel->write_footer($langs);
+	            
+	            // Close file
+	            $objmodel->close_file();
+			}
+			else
+			{
+	            $this->error=$objmodel->error;
+	            dolibarr_syslog("Error: ".$this->error);
+	            return -1;
+			}
         }
         else
         {
diff --git a/htdocs/includes/modules/export/export_csv.modules.php b/htdocs/includes/modules/export/export_csv.modules.php
index b81b3edcbe7..ce628acfd90 100644
--- a/htdocs/includes/modules/export/export_csv.modules.php
+++ b/htdocs/includes/modules/export/export_csv.modules.php
@@ -97,11 +97,28 @@ class ExportCsv extends ModeleExports
     }
 
 
-    function open_file($file)
+    /**
+	*	\brief		Open output file
+	*	\param		file		Path of filename
+	*	\return		int			<0 if KO, >=0 if OK
+	*/
+	function open_file($file)
     {
-        dolibarr_syslog("ExportCsv::open_file file=$file");
-        $this->handle = fopen($file, "wt");
-        return 0;
+        global $langs;
+        dolibarr_syslog("ExportCsv::open_file file=".$file);
+
+		$ret=1;
+		
+        $langs->load("exports");
+		$this->handle = fopen($file, "wt");
+        if (! $this->handle)
+		{
+			$langs->load("errors");
+			$this->error=$langs->trans("ErrorFailToCreateFile",$file);
+			$ret=-1;
+		}
+		
+		return $ret;
     }
 
 
diff --git a/htdocs/includes/modules/export/export_excel.modules.php b/htdocs/includes/modules/export/export_excel.modules.php
index 152635f3b00..ac0a31bd956 100644
--- a/htdocs/includes/modules/export/export_excel.modules.php
+++ b/htdocs/includes/modules/export/export_excel.modules.php
@@ -104,18 +104,26 @@ class ExportExcel extends ModeleExports
     }
 
 
+    /**
+	*	\brief		Open output file
+	*	\param		file		Path of filename
+	*	\return		int			<0 if KO, >=0 if OK
+	*/
     function open_file($file)
     {
         global $langs;
+        dolibarr_syslog("ExportExcel::open_file file=".$file);
+
+		$ret=1;
+		
         $langs->load("exports");
-        dolibarr_syslog("ExportExcel::open_file file=$file");
         $this->workbook = &new writeexcel_workbookbig($file);
         $this->workbook->set_sheetname($langs->trans("Sheet"));
         $this->worksheet = &$this->workbook->addworksheet();
 
         // $this->worksheet->set_column(0, 50, 18);
 
-        return 0;
+        return $ret;
     }
 
 
diff --git a/htdocs/langs/en_US/errors.lang b/htdocs/langs/en_US/errors.lang
index db93329a5f4..a78e5e5f59e 100644
--- a/htdocs/langs/en_US/errors.lang
+++ b/htdocs/langs/en_US/errors.lang
@@ -1,6 +1,7 @@
 # Dolibarr language file - en_US - errors
 ErrorDuplicateTrigger=A trigger file with class nam '<b>%s</b>' is present sevaral times. Remove duplicate trigger file in directory '<b>%s</b>'.
 ErrorFailToDeleteFile=Failed to remove file '<b>%s</b>'.
+ErrorFailToCreateFile=Failed to create file '<b>%s</b>'.
 ErrorThisContactIsAlreadyDefinedAsThisType=This contact is already defined as contact for this type.
 ErrorCashAccountAcceptsOnlyCashMoney=This bank account is a cash account, so it accepts payments of type cash only.
 ErrorFromToAccountsMustDiffers=Source and targets bank accounts must be different.
diff --git a/htdocs/langs/fr_FR/errors.lang b/htdocs/langs/fr_FR/errors.lang
index 249b3989728..a9d2a8ac707 100644
--- a/htdocs/langs/fr_FR/errors.lang
+++ b/htdocs/langs/fr_FR/errors.lang
@@ -1,5 +1,6 @@
 # Dolibarr language file - fr_FR - errors
 ErrorDuplicateTrigger=Un fichier trigger de classe '<b>%s</b>' est present plusieurs fois. Supprimer le doublon du répertoire '<b>%s</b>'.
+ErrorFailToCreateFile=Echec de la création du fichier '<b>%s</b>'.
 ErrorFailToDeleteFile=Echec de l'effacement du fichier '<b>%s</b>'.
 ErrorThisContactIsAlreadyDefinedAsThisType=Ce contact est déjà défini comme contact pour ce type.
 ErrorCashAccountAcceptsOnlyCashMoney=Ce compte bancaire est de type caisse et n'accepte que les mode de réglement de type <b>espèce</b>.