Basically, any program can only be as reliable as the software or hardware the program itself relies upon.
AC3D said to your driver 'give me a surface I can draw on' and your driver said 'here you go' and then handed AC3D an invalid drawing space.
I'd be at least as frustrated as you in this situation. If you know someone who can compile Mesa3D for your system, then I'm quite sure it would resolve your issue (without purchasing a new card). It's a software replacement for an OpenGL driver, so it's slower, but it's well implemented and free. If you put its file in with AC3D's exe then AC3D is the only thing that would be affected.
I think I've said all I can, so I'll be quiet now.
Again, good luck,
-- Jeff
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