CK Crash on Nif load

[johock]

I am trying to create a custom armor using assets from a different game, following this tutorial

Everything is fine until I try and add it to CK, as soon as I choose the biped model it crashes. I will attach the nifs if someone else want to see if it crashes for them. Any help is appreciated.

J-12_0.nif J-12_1.nif