Server Crash

[HimeChan]

My friend and I get kicked off of our multiplayer world with the message, "A fatal error has occurred, this connection is terminated." We've tried things like updating our chickencore, removing certain mods, etc.
I attached the crash logs for the world, if anyone can maybe help us figure out what's crashing us.  crash-2015-08-22_15.27.26-server.txt

[EvilOwl]

This is not a launcher problem, this is a modpack problem, especially when client/server configs are out of sync. Closing.

Post in the appropriate bug section for official modpacks or in Platform Pagoda for custom modpacks.