Hi.  This is probably a question that has been addressed someplace before, but I have no idea what to do about it.
OK, so here's what happens:  I'm in Figure Mode, and 2 really strange things happen when I move objects.
First, the object moved (and sometimes others in the scene) seems to lose its materials and turn to a shade of gray.
Second, when I hit "Undo" I get this message:
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The instruction at "0x0043dda3" referenced memory at "0x00000000".  THe memory could not be "read".
Click on OK to terminate the program.
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Obviously, this is some programmer-level code and it's written in a language I don't understand.  Does anybody know what's going on, or what can be done about this?
Thanks so much 
