Describe the crash
Taking damage with the living Enchantment on a diamond helmet causes my game to crash. Any damage tick causes the crash.

To Reproduce
Enchant diamond helmet with living and see if a damage tick causes a crash.

Crash Log
https://paste.dimdev.org/fageloqave.mccrash

Info (please complete the following information):

• Modpack Version: 2.76.2
• Server or Singleplayer: Singleplayer/LAN
• Version the world was created on: 2.76.2

Additional context
The diamond helmet is lvl 15, ~4400 xp total. I did not have this problem until then.

Living enchantment should be completely disabled from obtaining in the next update, except for the swords it's supposed to be on. Create a new issue if you manage to obtain a Living book in 2.77.