Blender 2.53 to RenderMan

Anyone knows how to install ribmosaic in Blender 2.53 ?

I don’t think it is ready yet. There’s a thread about progress on the new rimosaic here:
http://blenderartists.org/forum/showthread.php?t=193886

Does NOT belong in Blender news section.

As for your question, MOSAIC is for Blender 2.4x, if you download Blender 2.49b, open a text window, open the script and hit execute, then it’s a case of reading tutorials etcetera.

WhiteRabbit is working on MOSAIC for Blender 2.5x but it’s still in the early stages of development, as far as I’m aware.

I have everything running properly !