Put the summary of the bug you're having here
What I expected to happen was...:
to go into my single player world.
What actually happened was...:
I went to multiplayer and crashed
Steps to Reproduce:
1. Go into single player and enter a world.
2. You automaticly go into multiplayer.
3. You then crash.
Please follow the instructions on the screen: "Click 'Report to Mojang' and copy paste the information from below into the issue"
Please attach crash reports in the future to tickets about a crash.