Modules not displaying - Blank Page

I am getting the attached screen when directing my browser tp cmps_index.php. This file is in the Forum Root, and therefore the appropriate line has been commented out. I then tried it with the information that it requires (uncommented line) and it still displayed the following screen. I therefore assume that it has absolutely nothing to do with that, but as it was suggested on many other threads that that was a possible solution, I tried it.

Any ideas how I can remedy this problem?

Thanks

[Tigga]

You've made the modifications to your global.php file incorrectly.