Hi andrew - 3ds files can only contain triangles.

Are you referring to Steve's message here: ?
http://moi3d.com/forum/index.php?webtag=MOI&msg=4978.21

It looks like he wrote there that he was using your 3DM file (not 3ds?), and using LWO format.

I wonder if your problem has something to do with using both reflection and uv mapping together in your rendering though.

- Michael