ATI HD Problem: Beta hotfix available - UPDATED 11/6

[TjaXanK]

I'm having the usual problem that this hotfix shoul'd solve, tried following the instructions and the game runs but the "invisible objects" issue remains, as you can see in the screenshot and for that reason I cannot continue with my game, hope you can help me.
Tom

BTW: My GPU is an HD3870 By Shappire and I am running Windows 7 Release Candidate (RC7100) with the latest CatalystControleCenter and Display Drivers