Hi. You have a custom php.ini file which does not contain needed entries for Zend to work properly. Please add the following to your php.ini file:

[Zend]
zend_extension=/usr/local/IonCube/ioncube_loader_lin_5.2.so
zend_optimizer.optimization_level=15
zend_extension_manager.optimizer=/usr/local/Zend/lib/Optimizer-3.3.3
zend_extension_manager.optimizer_ts=/usr/local/Zend/lib/Optimizer_TS-3.3.3
zend_extension=/usr/local/Zend/lib/ZendExtensionManager.so
zend_extension_ts=/usr/local/Zend/lib/ZendExtensionManager_TS.so

To make subfolders inherit the settings, please also add the following to .htaccess:

suPHP_ConfigPath /home/username/public_html

Change username to your Cpanel username.