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

[Camara]

I have Penumbra Black Plague from Gamersgate and I'm getting some crashes at random times and places. The message that appears is "Penumbra.exe caused an EXCEPTION_ACESS_VIOLATION in module atioglxx.dll at 001B.696BBD0D, atiPS()+6230349 byte(s)". I have updated the drivers but I get the same errors. I have an ATI Mobility Radeon HD 2400 in a Toshiba Satellite laptop.

Does this hotfix solve this crashes problem or just graphic glitches? I have no graphics problems with the game.