Runtime Error: Mesh has no TVFaces

I opened up ArthaswithSword, removed the glow and the book, selected everything, told it to export as MDX, and it gave me that error, "Mesh has no TVFaces." WTF's it mean?

Same thing when I just remove the hero glow. I'm guessing it has something to do with the uvw? How do I edit the pre-existing one for that model?