Hello, I am trying to run the SampleAISBasic sample program on WinNT 4.0 SP6. Compilation and linking worked fine, but when I run the program a dialog informs me of a "Fatal Error During Graphic Initialisation" coming from Graphic3d_WNTGraphicDevice function. The VC++ 6.0 debugger tells that the error occurred in TKV3D.DLL, and I think it is right, but I cannot imagine why. All 2d samples work fine, while all 3d sample programs give the same runtime error. Any suggestion?