Game Crashes randomly in 14w03b

Game crashes randomly and I have to force quit
Also when I did not fully quit and just pressed play again it just showed a black screen; I had to do Cmd+Alt+esc then Cmd+Q to play again.
What I expected to happen was...:
Thought it was just a lag spike

What actually happened was...:
The game got stuck

Steps to Reproduce:
1. Played the game
2. Just got stuck randomly