Hi I've just tried to upgrade the PHP version on the server from 5.3 to 5.4. This worked just fine and I also was able to get Zend Guard Loader 6.0 for php 5.4 to work properly: [root@srv1 lib]# php -v PHP 5.4.45 (cli) (built: Jan 3 2016 21:49:57) Copyright (c) 1997-2014 The PHP Group Zend Engine v2...