Im using knoxz testpack on the curse launcher
Its a pack where we test all 1.9 mods and find bugs

Got this crash today

http://pastebin.com/qYGKP3xc
Not sure what i did i was breaking some blocks from exu2 and i think i may have put the module storage in my offhand

Possibly related #537

#475 #503
My bad didnt see thesei was getting shot by skeletons so that may be it

Will be fixed next release