Fats, if you delete video.cfg in the settings sub-dir of the Aces High folder, it will fix this problem. YOu will have to reselect resolution, color et al but it works. I just created a DOS batch file to delete my video.cfg and I have it as a shortcut on my desktop. Click that one first, click Aces High next, reselect video settings. It's a bit of a pain but it works...
-SW