I have no idea what this could be. It's the first time I hear this. There have been problems with the movie codec, with the Molebox packing of the demo and even with XPs DEP (Data Execution Prevention) on a few machines, but this is new to me. On the mayority of a thousand or more machines the engine worked. Memory access…
DAZ - did you unzip it with folders intact? you should not run it from inside the zipfile. Plus, there should be two folders ("crypto" and "level2") byside the engine.exe and a few config files. Also, does your computer support 640*480 Pixels Fullscreen? That's the default setting, you may alter this by running…