[solved]Can't run Episode One Demo

[Alpha23]

Hi!

When trying to start the Episode One Demo, I get the following error message:
"PenumbraDemo.exe caused an EXCEPTION_IN_PAGE_ERROR in module cg.dll at 001B:008167F1, GetAtomString()+148643 byte(s)"

What can I do? I also tried to fix the problem by installing the patch, but I still get the same error message.

System specs: Windows XP SP2, AMD Athlon 3000+, 1 GB RAM, GeForce 7600 with latest Forceware Drivers, DirectX 9

Thanks for your help!

Regards, Timo