When I say ANYTHING on a server I instantly crash. The Server is on 1.6.1 And So Am I

Put the summary of the bug you're having here

What I expected to happen was...:
That when I talk on a server, It actualy shows up in chat and does not crash
Describe what you thought should happen here
I can talk on servers without talking

What actually happened was...:
When I talked, I instantly Crashed
Describe what happened here

Steps to Reproduce:
1. Be on a mac in 1.6.1
2. ... Log into Golden.hg ( What I used ) or any other server ( Not tested on any other server )
3. ... Talk in chat