If you are sure the files have been uploaded correctly, make sure the permissions are set correctly on them. /var/www/vhosts/mysite.com/httpdocs/applications/forums/sources/Topic/Topic.php /var/www/vhosts/mysite.com/httpdocs/system/Node/DelayedCount.php   Hello i see this error after upgraded to latest version. I've bien downloaded and uploded 2 times this files also but still same error.  Controlled also permissions (644)... Any solution?