So if I press render, it says ‘CreateProcess failed for ’mantra" , it does the same if I put a renderman node…

I have put a render node in the output, camera, etc, looked at tons of tutorials, it is really frustrating. I cannot find it anywhere online.

Anyone knows about this? Thank you !

Sounds like a permissions problem of some sort to me.

I was having a problem like this. But I believe I have it resolved. Make sure your houdini.env has these three lines:

RMANTREE = “C:\Program Files\Pixar\RenderManProServer-21.7”
PATH = “$PATH;$RMANTREE\bin”
HOUDINI_DEFAULT_RIB_RENDERER = prman21.7

And, I stopped getting strange errors when I exited Houdini and restarted it by right clicking “run as Administrator”.