Crash Everytime I try to join my server.... 1.7.10 not 1.8.1

Put the summary of the bug you're having here
I have a bad crash that won't let me play minecraft.

Describe what you thought should happen here
What I expected to happen was for me to join my server but: Crash.

Describe what happened here
What happened was I tried to go on my server, little did I know it was going to crash minecraft; so it did, now I'm here.

Steps to Reproduce:
1.Cick join server
2.Loading
3.Crashes