I have a problem with 3DGS.
I can't run the the engine, it says "Can't create D3D Device".
But why?

My System:
Athlon 64 X2 4800+
Geforce 7800GTX 512MB
1024MB Ram

I have installed the latest Nvidia Drivers and DirectX.
I use 3DGS Commercial 6.40.5
I have allready reinstalled 3DGS, and the Demos in the downloadsection: Car Demo,Bronx Street Walkthrough shows the same error.

Please Help!