game-editor.com

My game runs fine for a long time with no slowdowns and it doesn't crash.

I see from the Game Editor version history that a memory leak and exported programs crashing has been fixed:

http://game-editor.com/changelog.html

I'd say your best bet is to upgrade to the latest version of Game Editor. It looks like it will most likely fix your problem.

Okay, thanks. I'll do just that and post how it goes.