Hi
I have played both tutorials and the Shiloh scenario without any problems.
When I finally started the grand campaign my screen went black within a few minutes. A retry ended the same.
Error message: DirectX to Renderer invalid call (Burst Mode).
I have Vista Home Premium and Nvidia Geforce 8800 GTS if that matters any.
I've searched and found that this happened to someone with BOA but the thread diden't offered a solution as far as I could tell.
Edit:
Ok, sorry. Seems like the old thread had the solution after all. Turning of the screensaver. Paniked there for a moment.