NBT Edit Item Crash

I used a Minecraft program called NBT edit. NBT edit allows me to make custom enchants on armor, weapons, ect. So I added Protection 1, Fire Protection 1, Projectille Protection 1, and Unbreaking 10 on a gold chestplate. I made this chestplate for an adventure map im making called: Rob the Bank! PVP.

What actually happened was when I scrolled over the chestplate, Minecraft crashed. I tried to relog into Minecraft but I kept on crashing when ever I scrolled over the item.
Describe what happened here