hey guys,
I have a problem.

When i had my old GeForce 6600 (128MB)i had no problems playing scda singleplayer.
when i upgraded my graphic card to a Radeon HD 2600 PRO (512MB) i can't play singleplayer anymore.
When i select a mission, i see the loading screen, and after a while, my ystem restarts.

I can't even play!!

here my specs:

Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 4400+, MMX, 3DNow (2 CPUs), ~2.3GHz
Memory: 1024MB RAM (tonight 2 gigs)
Card name: Radeon HD 2600 PRO

Try re-running the settings-optimizer found in your start-menu. It will set your new device in the INI files.

well, i already tried that....
I also tried to install the directx that came on the disc, but no luck with running the game with that.

Im just thinking, maybe running the game with 1 cpu?

so i switch 1 cpu off when im gonna run the game.

Maybe thats gonna help?

Guys, problem fixed.
I turned 1 CPU off, and i could play