No. When I ran it in Redsdk - before the slow down - I never noticed any problems. It is only after following Khadija's advice and changing to GDI (flicker free) that this started happening.
I appreciate your help, but at the end of the day I can do the drawings I want and save them, it is only annoying to get the crash and the error report window. Then if I forget to untick the box, TurboCAD restarts.