Joining Infinity server crashes on Joining

I have a vanilla Infinity server set up and It was been working fine. i have made no changes to the server or my computer, but it just started crashing minecraft when I try to join. My friend says that it shows me logging in and logging off. Does anyone know a fix for this?

Pastebin: http://pastebin.com/fbn9kW5e

Edit: Realized I messed up my title. My minecraft crashes when joining, not the server and no-one on the server has issues.