مشكله في لوحة التحكم ..

includes/class_dm_user.php

 // visitormessage 'postusername' 
            $this->dbobject->query_write(" 
 
                UPDATE " . TABLE_PREFIX , "visitormessage 
                SET postusername = '" . $this->dbobject->escape_string($username) . "' 
            ");

// visitormessage 'postusername' 
            $this->dbobject->query_write(" 
 
                UPDATE " . TABLE_PREFIX . "visitormessage 
                SET postusername = '" . $this->dbobject->escape_string($username) . "' 
                WHERE postuserid = $userid 
            ");