Cant Play the game

I start the game in the launcher it works. But when im about to choose a world to play on it crashes, after pressing "Play selected World"

What I expected to happen was...:
that i can play that game.

What actually happened was...:
the game crashed
Steps to Reproduce:

1. I press Play on the launcher
2. ...I press Singleplayer
3. ...I choose a world
4....I press play selected world
5. Game crashes