"I was able to fairly easily use Style Manager to assign the material.
To do this, I created a new Material Definition in Style Manager (called Textured), checked the Style Override box under its Display Props, and used your Textured nXt…"
"Hard to say what's happening without seeing the material and model. If you can re-create the material and get it to work with the new one I would use it and assume something is wrong with the old material. If it's happening…"