Hey robnich -
Just wondering, do all the other hot keys work, such as the arrows, C, L, S, etc.?
IOW, is it only the Spacebar that is initiating this problem?
Yes, all the other hot keys work. The interesting thing is that the space bar used to function normally in MA3 on the same Windows 7 computer. That's why I think it must be a conflict with some software I installed since that time, but I have no idea what or when, and, as I mentioned, it's not bothersome enough to search for the culprit.
Bob N.