After anywhere from a couple of minutes to almost an hour, my game randomly crashes. Nothing appears to trigger it, and there are no error messages of any kind. I only have the 20 in-game day demo, and the crashing happened both in 0.45b and 0.46. I tried downloading java6 u30 but nothing changed. My laptop doesn't have much of a problem running it, so it's not that. Anyone have any idea what is going on here?