I have been reading everything I could find here at elysiun about .rib exporters.(there is not much) My old favorite, Blenderman, appears to be dead. The Aqsis/blender builds based on Tuhopuu2 is not stable enough for me. When I can get aqsis-blender to generate a rib, my render (BMRT2.6) will not eat the rib without vomiting. Bad rib generation. But most of the time blender crashes without generating a .rib file.
I had very little trouble with any of the old Blenderman scripts. The last being blenderman0.1beta9.0-dunkfordyce15.py
and I dont remember where I got it, maybe from Goran
blenderman was great for scene setup. Just needed to export geometry, and lights and camera position. It appears that with most projects geared towards external renders, (aqsis, yafray), there is a desire to have some sort of coralation with Blender materials and the external renders output. I think that when it comes to renderman renders, a lot of folks missed the boat here, why, when given the power of the renderman shaders would you want to render with the built in blender shaders, if you were going to do that just use the internal renderer.
I know, I could just go back to Python 22 and use blender232 or something. But I dont want to. May be its time I learned Python. Maybe it would not be difficult to update the most recent version of blenderman to use the new python API.