MC 1.7.10
Forge: 10.13.4.1614
Crafting Tweaks: 1.0.79

Placing a stack of any items into vanilla crafting grid, and then using "item spreading (shift-balance)" feature will cause the client to lockup(freeze). There is no client crash as the client appears to go into a infinite crash loop, but server side console I receive this error http://pastebin.com/RUWbWad7 .

Quick fix:
Force client shutdown and restart client