After activating the invision module all Drupal pages become blank.

I am using v5.2 of Drupal and v2.3.1 of IPB. I am not a programmer myself so I'm not sure what information I should supply you with to help you track down the problem, tell me if there is something more you need to know.

The only possible reasons I can think of for this to happen is;
1) I added this module _after_ installing Drupal and IPB
2) In the install guide it says you're supposed to place the "drupal_5x" folder in "INVISION_ROOT/loginauth", but my loginauth folder is located in "/sources/loginauth/" so I placed it there.