Al_B on 8/2/2010 at 20:12

---

As a first step I suggest you try (http://www.google.com/search?sourceid=ie7&q=video+card+or+driver+doesn%27t+support+ubyte4n+vertex+data%22) this link. If that doesn't solve your problem then some more information about your graphics card, system etc. will be rather useful.

(strongly resisting the tempation to be snarky)