I was on a multiplayer server called Diamond Craft, and I logged in then I wanted to chat, then when I entered it in, It crashed. And when I entered it again, it crashed over and over. Also the Servers IP is 198.24.165.2:25873

I thought it would enter and everybody would see it, but it keeps on crashing.
Describe what you thought should happen here

1. You type down what ever you want in chat then enter it in.
2. then It will crash