Tools with the hammer modifies work fine on things that can be broken down into dust but if i mine anything else with it it crashes.

http://pastebin.com/djD9AizH

I will update to latest version, I am one behind on Davy Jones Locker modpack at the moment.

I'm Playing Agrarian Skies 2 and the game crashed on me when using Stone hammer on dust.

as well I upgrade a TiCon Pickaxe with a Diamond Hammer and when I used the pick on Cobble, ore Sand and ore Gravel, the game also crashed

http://pastebin.com/ivSp5LFu
http://pastebin.com/QkXjGC7a

This was fixed here b8e7f51#diff-6a0ae6adb8d627aee970b4b3f402e81cL53

So @Tedyhere I'd recommend that new version ;)