I have a lightly modded server that I was testing out earlier, but when I tried to join(server launched and was running without people fine) I crashed the server and got a fatal error message on my client. As the server computer blue screened, I don't have a crash log, but I do have some interesting log files(couldn't find this bit in any of my fml log files, so it's only partial).

http://pastebin.com/nkHiEA9Z

Seems like a duplicate of #84. Still unsure what could be causing it.