Model has faulty texture paths. You have to fix that first
I have the same problem as the author. Where exactly do you change the paths? In CreatureDisplayInfo.dbc?
I think I was drunk when I wrote texture paths. It's more texture faces, to keep the proper tech language.
You have to re-set the texture positions on the model. You change them with a model editor. You have to properly set the new changes to the older texture template. There is a good tutorial on here how it works, I'd recommend check it out.