This is silly. This is their fifth TES editor and they still haven't fixed the problem with reading BSA entries. Or plainly, they don't. Wondering what I mean? Try making a new item from scratch, then giving it a model and texture entry. You can't, because the data it -needs- to read is coiled up inside the .bsa's.
*Yawn*
Boy textures are taking a while.
*Yawn*
Boy textures are taking a while.