> > Someone is poking their stack pointer where is doesn't belong. > > > > Is this a problem in MAME (something not being emulated properly) or a conflict with > MAME and Windows...? Er wut?
What little information you posted leads me to believe if you stopped using HLSL, the issue would disappear. From my experience using ALT+ENTER to switch to Window/Full Screen and back while HLSL is enabled is just asking for crashing and other bad things.