Doom Builder I Error Fixes

As I recall there used to be a Doom Builder forum on here that used to have information on how to fix various bugs that occured with Doom Builder under Windows Vista, however when I try to get there I am now told that it's private and that I can no longer access it. Does anybody have the information on how to fix some of these errors? (Namely the 'Error 75')

I would use Doom Builder 2 but I just can't get used to the way the mouse buttons have changed and the way textures/flats are assorted. I just want the original back T_T

For any Doom Builder related troubles, visit the forum from the Doom Builder website. Find it there.

Oh wow, I don't know how that managed to slip by me. Thanks for that.