Strange. I'm assuming you're using texture sets? Have you made sure that they all reference the correct filepaths? You may have accidentally re-named the folder or something. EDIT: Just checked in the GECK, and with the version on your mod page, the filepaths do line up. You don't have normal maps assigned to them, though. That shouldn't cause this, but you should probably assign some at any rate. EDIT #2: Checked some more, and several of your texture sets do have incorrect filepaths, namely the "0000ts" and "0000wastelandmerchant" ones. Are these the ones having issues, or are they just left over from development?