Hi folks, i am making upgrade test on local.I succesfully upgraded from 1.3.1 to 1.4 final, but i cant access back office. i deleted install folder and rename admin folder but back office page cannot be opened .I dont mean i couldnt login to admin panel.When i write localhost/adminxyz , even back office page cannot be opened. I edited the lines in config.inc.php like below to see what the error is . @ini_set('display_errors', 'on'); define('_PS_DEBUG_SQL_', true); But even i cant see any error comments.What is the problem ? Any idea ? Thanks .