in 1.7 i click on a server and when it is connecting the game crashes

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
i thought that i could play in 1.7
What actually happened was...:
Describe what happened here
it crashed in 1.7 when i tried to log on to a sever
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...open minecraft in 1.7
3. ...click on a sever and game will crash i think its just for me though