Crash report (server): http://pastebin.com/GmyE5ZTH
How to reproduce: SunDuan, player from my server, said is when he change armor on Arcane Terminal, but I don't know if It's correct.
Crash server and client.

See #300.
Your ThE is out of date, "thaumicenergistics{1.0.0.1} [Thaumic Energistics]", please try again with the latest version 1.0.0.5