Hi Andrew.
I have tested v3.2.07 on Fedora Core 8 x64, but I still can't get a correct-looking result.
These are the steps I took to get to this picture:
1. Load [3dc_install]/samples/cube.obj with medium carcass (38528)
2. Paint something on cube
3. Export ptx (color, displacement, specular)
4. Load cube.obj into Maya. Setup scene.
5. Export whole scene to rib with RenderMan Studio 2.0.2 (rib archive for cube object created automatically)
6. Render scene rib with RifSubdivFaceIndex ri-filter (included with RenderMan Pro Server 15.0) and capture the rib to file
7. Take the captured cube rib archive (now with __faceindex primitive variable for face connectivity) and replace existing cube rib archive with it.
8. Apply ptex shaders on the cube object and render with RenderMan Pro Server 15.0
--> result
If I'm doing something wrong here, please let me know.
I have attached my ptex exports, rsl shaders, and the cube rib archive with __faceindex primvar baked-in.
Please try them out if possible. And let me know if you need the scene rib (it needs to be cleaned up) or anything else that might help.
cube_ptex.tar.gz
ptex_shaders.tar.gz
cube_ribarchive_faceindex.tar.gz