Fatal error: Cannot redeclare Loader::__get() in system\storage\modification\system\engine\loader.php

Fatal error: Cannot redeclare Loader::__get() in system\storage\modification\system\engine\loader.php

Go to YOUR_INSTALLED_FOLDER/system\storage\modification then delete all files and folder except index.html

Then refresh the front end, hope it works.

Then again install your ocmod.xml again.