[peterchen]

After installing the nVidia display Driver update January 2010 (available through Windows Update as "optional"), Armored Princess crashes when entering the main game map with the following error:

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Application aborted!
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C:\work\skyfallen\tbm\BMRender\rmode.cpp(5534): DirectX call failed: -1, -1, E_FAIL (An undetermined error occurred inside the Direct3D subsystem)
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OK
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My System:
i7-920 @ 2.67GHz
Gigabyte EX58-UD3R
North Bridge Intel X58 Revision 13
South Bridge Intel 82801JR (ICH10R) Revision 13
nVidia GeForce 8600 GT, 256MB
Windows 7 Profesisonal

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Note: Windows update automatically sets a restore point, so you can restore the system to the state before the update was installed. This does solve the problem. (at least for me).