weird, both in this case, i would like to see the event viewer log, to get more info, on why/when it closed... sounds like a ram issue...
Both logs now, form hfs mentioned earlier, mainly the standard log form the menu, not debug.
Both, as run as admin is causing problems(this usual bypass permission issues)
kinda curios on what your running it on, a dxdiag would be nice...
if the above didn't help, there not much help anyone on the form can do, with out knowing why it crashed, or what happened when it closed...
dxdiag would give me you pc spec with other info, event viewer log would tell me exactly what happened, hfs logs would say when it went down along with time stamps for faster search in event view, along with addition info form hfs that might have caused or show the cause of the problem...
sorry, but i'm not going to be of much help hear...