Minecraft for the ps3 force quits?

Whenever I try to play split screen with my younger siblings, the game picks a random time to force quit. This is a major inconvenience, as now I'm forced to save every few minutes, and am to scared of lost progress to fully enjoy the game. Any ideas as to why this keeps happening?

Minecraft PS3 is kind of buggy and crashprone. I've had it crash to the XMB on me a couple of times even just on single-player.

The only thing you can do is try to reinstall the game