diff --git a/htdocs/product/canvas/product/actions_card_product.class.php b/htdocs/product/canvas/product/actions_card_product.class.php
index 73ea52ce705..8f6dcfe783b 100755
--- a/htdocs/product/canvas/product/actions_card_product.class.php
+++ b/htdocs/product/canvas/product/actions_card_product.class.php
@@ -18,15 +18,15 @@
 /**
  *	\file       htdocs/product/canvas/product/actions_card_product.class.php
  *	\ingroup    produit
- *	\brief      Fichier de la classe des produits par defaut
+ *	\brief      File with class of actions for canvas product
  */
 include_once(DOL_DOCUMENT_ROOT.'/product/class/product.class.php');
 
+
 /**
- *	\class      ActionsCardProduct
- *	\brief      Class with controller methods for product canvas
+ *	Class with controller methods for product canvas
  */
-class ActionsCardProduct extends Product
+class ActionsCardProduct
 {
     var $targetmodule;
     var $canvas;
diff --git a/htdocs/product/canvas/service/actions_card_service.class.php b/htdocs/product/canvas/service/actions_card_service.class.php
index b21db469db1..29d7624c3c9 100755
--- a/htdocs/product/canvas/service/actions_card_service.class.php
+++ b/htdocs/product/canvas/service/actions_card_service.class.php
@@ -18,15 +18,15 @@
 /**
  *	\file       htdocs/product/canvas/service/actions_card_service.class.php
  *	\ingroup    service
- *	\brief      Fichier de la classe des services par defaut
+ *	\brief      File with class of actions for canvas service
  */
 include_once(DOL_DOCUMENT_ROOT.'/product/class/product.class.php');
 
+
 /**
- *	\class      ActionsCardService
- *	\brief      Class with controller methods for product canvas
+ *	Class with controller methods for product canvas
  */
-class ActionsCardService extends Product
+class ActionsCardService
 {
     var $targetmodule;
     var $canvas;
diff --git a/htdocs/user/class/user.class.php b/htdocs/user/class/user.class.php
index e1e8b227d24..db53b525217 100644
--- a/htdocs/user/class/user.class.php
+++ b/htdocs/user/class/user.class.php
@@ -112,6 +112,7 @@ class User extends CommonObject
 		$this->all_permissions_are_loaded = 0;
 		$this->admin=0;
 
+		$this->conf				    = (object) array();
 		$this->rights				= (object) array();
 		$this->rights->user			= (object) array();
 		$this->rights->user->user	= (object) array();
@@ -530,16 +531,12 @@ class User extends CommonObject
 
 				if ($perms)
 				{
-					if (! is_object($this->rights->$module)) $this->rights->$module = (object) array();
-					if (! is_object($this->rights->$module->$perms)) $this->rights->$module->$perms = (object) array();
+					if (! isset($this->rights) || ! is_object($this->rights)) $this->rights = (object) array(); // For avoid error
+					if (! isset($this->rights->$module) || ! is_object($this->rights->$module)) $this->rights->$module = (object) array();
 					if ($subperms)
 					{
-						if (! isset($this->rights->$module) ||
-						(is_object($this->rights->$module) && ! isset($this->rights->$module->$perms)) ||
-						(is_object($this->rights->$module->$perms)) )
-						{
-							$this->rights->$module->$perms->$subperms = 1;
-						}
+						if (! isset($this->rights->$module->$perms) || ! is_object($this->rights->$module->$perms)) $this->rights->$module->$perms = (object) array();
+						$this->rights->$module->$perms->$subperms = 1;
 					}
 					else
 					{
@@ -581,8 +578,11 @@ class User extends CommonObject
 
 				if ($perms)
 				{
+					if (! isset($this->rights) || ! is_object($this->rights)) $this->rights = (object) array(); // For avoid error
+					if (! isset($this->rights->$module) || ! is_object($this->rights->$module)) $this->rights->$module = (object) array();
 					if ($subperms)
 					{
+						if (! isset($this->rights->$module->$perms) || ! is_object($this->rights->$module->$perms)) $this->rights->$module->$perms = (object) array();
 						$this->rights->$module->$perms->$subperms = 1;
 					}
 					else