I have installed the mod as i was supposed to but when I try to use the hammer it crashes. I can get into Minecraft, make a new game, build with other things from different mods but when I try to use the hammer my game crashes, I have looked everywhere for a solution but cant find one, can someone help?

Can you please send me the crash-report?

Will close this issue for now. If it still persists just post the crash-report here.