[MC-15886] feed the beast crashes when i try using the wand on the crucible

Ive been using feed the beast, everything has been working fine until now.
whenever i try using the wand on the crucible to make items it logs me out saying internal server shutting down. then the crash window appears which Ive attached below

Comments 2

Anon Ymus 2013-05-18T17:51:07Z

This ticket is invalid as it relates to a modded or 3rd party client/server.

Any non-standard client/server build needs to be taken up with the appropriate team, not Mojang.
Any plugin issues need to be addressed to the plugin creator.
This site is for addressing issues related to the base unmodded MineCraft.

Wyatt 2013-05-18T19:23:31Z

FTB is not supported my Mojang. It is created by someone else. Mods are not created by Mojang.