Got an error for you in 1.1.0
Right clicked an itemduct with a wrench under an Ex Nihilo barrel and it crashed to desktop.
http://pastebin.com/ZB9v74ZQ
Starts off with:
java.lang.NullPointerException
at thermalexpansion.part.conduit.item.ConduitItem.wrenchSide(ConduitItem.java:1008)
at...