HELP! Need help, trying to model swap.

[LeafyBlade]

I'm trying to change tauren bear form into an elekk with a custom skin, although it doesn't work, it ends up like this.




I had this before, on my first model edit, but I fixed that by copying and renaming all files, insteed of only the m2. I did it this time too, I don't know what might be causing this. DruidBearTauren has some anim files, while elekk doesn't, so i couldn't change those, might that be causing it? And how do I fix that?