Skimpy horse model after attached xml to nif

[Warsteiner]

Hi , i finally found out how to attach the xml to nif to use hdt and now i got this horse skin during the scene.. why is that? (i attached the picture to the post) i use MNC and i found the horse.nif file in the data\meshes\\slnc\horse\horse.nif , i added the NiStringExtraData to it atatched the patch and the HDT Havok thing, altohugh it works now but i got this strange mesh.. thanks for help.