DirectX errors?

[Ellianshia]

I recently reinstalled Windows due to a system crash that I couldn't recover from. The game worked fine until I reinstalled. Now I'm getting the following message:

"C:\work\skyfallen\tbm\BMRender\rmode.cpp(2645 ): DirectX call failed: -1, -1, D3DERR_INVALIDCALL (The method call is invalid. For example, a method's parameter may not be a valid pointer)"

I'm using the latest available drivers and DirectX and my system configuration is as follows:

Windows 7 x64 (All updates installed)
ATI Radeon HD4850 Pro / 1GB
Intel Core 2 Extreme / 3GHz
4096 MB DDR2 Ram
Creative Sound Blaster Xtreme Music

Either way, the game worked before on the same configuration without any issues, so any kind of solution would be welcome.

EDIT: The issue seems to manifest itself both with Armored Princess and Crossworlds. The Legend works fine.