[Revan]

Did you have this hack installed before and uninstalled it? Because a known error in the previous versions was that that field wouldn't be dropped like it should.
Do this: In ./installer/hacks/rpg_integr_hack/install.php find:

PHP Code:

$this->exec_queries('alter'); 


Add above:

PHP Code:

$this->failsafe = true; 


That should hide the errors and allow the script to install properly.