When InventoryTweaks attempts to auto-refill a tool to one of Mine&Blade's sword or shield slots, the game crashes with the following crash: http://pastebin.com/kpaPw06U

I and one other on my modpack have been able to replicate this.

http://openeye.openmods.info/crashes/f8d2be57af8179e403a6cb7636e07012