I personally never had the bug, but that could be because I rarely use triggers...
what triggers do you use / what do they do? Maybe they do "illegal" stuff and so the game crashes.
This is what happens; I tested this today. After about 35 minutes the map becomes 'unstable', in that if you go to create anything, select anything, whatever, the game locks up.
EDIT: Here is the map in a zip and a preview image.