the game crashes when i'm in a world.

I open the minecraft launcher and start minecraft 1.9.4. i'm in the home menu and i click on single player. i create a new world. i come in a new world but the blocks aren't there yet. i only can see the clouds and the sky and the bottom of the world. and then the game crashes and i get an error file. this don't happen when i play 1.8.9 or an earlier version of the game