It's funny. I've been trying to understand the glitch myself, and I've found some things. The crashes are caused by saving. If you turn auto save off, you can go for hours, no problem. But that obviously that doesn't help anything. Even if you pause and wait for the save to complete it will still crash about 2/3 times. Even saving and quitting won't help you, still crashes before the bar fills usually. But I found something weird. I started a new world, and I've played it a lot and saved a ton, but no crashing. I think it has something to do with the load accumulated through many hours of play or the update can't handle the format of old worlds for some reason. Sorry no real definitive solution, but maybe you can try opening a new world. Granted I haven't done too much in the new world, but it seems to be stabler.