Thanks, I'll look into those. They sound like the kind of bug that happens intermittently depending on your hardware, so they can be difficult to find and clear up.
I was thinking the same about sleeping, and am planning on adding a 'sleep until x' menu, so that should fix the other issue. It might have to be just 'until morning' or 'until night' (since some of the girls will be nocturnal) as the dialog box only has room for four options and there are six time periods.