I'm turning to turn on the compilation for a magento site and once I do the product and category pages give
[type] => 64 [message] => Cannot redeclare class Mage_Core_Model_Resource_Helper_Mysql4 [file] => /includes/src/__catalog.php [line] => 12655
Nothing in the core file been changed and the only thing that been added is a module (Full Page Cache) which the developers are claiming isn't do with their plugin as they disabled it then tested it.
I'm using Magento ver. 18.104.22.168