this crash happened, when i dropped an item onto an transposer, who output the item through pneumatic tube to a chest, but then i removed the chest to test if it works like the redpower transposer, then item was send back to transposer, and then it crashed, when item entered the transposer from the output side

crashlog here: http://pastebin.com/xgWd596k

btw, this is a server crash, at least the server which starts in single player

Duplicate of #98