My single player worlds keep getting deleted. This is the 3rd or 4th time that this has happened. They always disappear on their own, it's never that I accidentally delete them.
I'm beginning to think that it happens whenever I switch from 1.7 to 1.8, but I'm not sure. (I've tried to stop switching over as much, just in case.) It's getting annoying, having to start over so many times. Does anyone know anything about this?