crash when joining smp server http://gyazo.com/5b071a80a06000d9f3f4385a1ee34322 http://gyazo.com/79565abd8391f7696b34c607e52b86b6

Put the summary of the bug you're having here

Whenever I try to join any SMP servers on the 1.7s I immediately crash (tried restarting computer, changing versions, different servers)

What I expected to happen was...:
Describe what you thought should happen here

I though that I would just join the server

What actually happened was...:
Describe what happened here

I crashed lol

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ... Sign into any of the 1.7 versions
3. ... Join any multiplayer server