Problem with boolean function

 From:  aareminer
7303.1 
Hi all

I have since 3 weeks a trail version of MOI3D. Some functions are impressive. The Boolean function is not working at all. If I click the function the screen is starting flittering and is not stopping. If I press escape, the flittering is going on in most cases. The only way to get out of it is ALT+CNTR+DEL.
I don’t think that it is a hardware problem as Mastercam an Spaceclaim are working without problems.
Has somebody a tip what I may make wrong?