I found this issue when making the armor in my modpack, of 180 mods on a server, which my game crashed. I tried multiple times with the other upgrades (Mana , spell resistance and cooldown, and all don't work). I then tried to a brand new profile with cataclysm and all the requirements needed for the mod and it still doesn't work.

I believe it has something to do with the display in the smithing table UI. I found that the only error is with this armor, and all the other armors display perfectly fine. I hope this gets fixed as this is such a cool cataclysm expansion pack, that I would like to enjoy but can't.