Game locks up and kicks you out.

Game will start normally and will run for about 20 seconds. Then it locks up and will not allow any user input. I let it sit for minutes and it never unlocks. I have to exit the game completely. If I try to reenter either it goes to the title screen and kicks me out before starting the game or it lets me in but then locks after another 20 seconds or so. This is actually for version 0.11.1 but for some reason your form will not let me enter that.