I don't see anything unusual in the one log that I can look at. The game starts up at nearly midnight on Saturday, goes through normal startup processing, and runs normally for about 3 hours. The second log can't be opened.

I've run the game for days on end without those kinds of problems. I really have never seen anything odd like that happening in months of testing, and I run the game on many different kinds of computers.

It might take capturing several logs and (maybe) keeping an eye on the computer to make sure that something isn't happening to interrupt the game.