Auto Assembler Issues/Crash

[Melmog]

When reloading the world, Auto Assemblers need a block update to craft again. Pulling the item out of an already configured Auto Assembler crashes the game.

Crash-report: http://pastebin.com/QJHwbJ4r

Issue 103 stated that crafting an recepie with an return item, like a bucket, crash the game. I tried to autocraft TNT by attaching 2 Jabba Barrels (no upgrades) with the ingredients in them. As soon as i finished configuring the recepie in the GUI, the game chrashed.

Crash-report: http://pastebin.com/9qzFWSKN