LOL, you're not causing any problems at all. I hope that some scene group will release a real crack for it. Still, it's a very ironical thing since quite a lot ActiveMARK protected games had quiting problems (those with AM v5.3) when they were... uncracked
But when I fixed them, all those quitting problems were gone.
Thanks for your help - I'll try to find a solution, but in later time. Cheers
EDIT: A small suggestion - try running in different compatibility modes, maybe it will help...