Well, it can be a Vista issue. does the EXE file have 'run' permission to everybody? Does this error appears at runtime or the exe doesn't even start execution?
Also, be sure to not be using any external DLL that is currently on your system PATH (b3dsdk.dll, newton.dll or whatever) and not on everybody's system path.
Also, be sure to not be using any external DLL that is currently on your system PATH (b3dsdk.dll, newton.dll or whatever) and not on everybody's system path.