Crash after opening chest

So I try to create a small proof-of-concept "adventure" map.
I placed some chests in a line and /gave myself an iron shovel with one use left.
Then I8 went to MCEdit and gave it some enchants so it can be "Thor´s hammer"
Knockback VI, Fire Aspect II and Sharpness V

However, when I tried to open that chest with it, the game crashed.

Is it because these enchantments are not for Shovel?