The environment variable for RfH must be listed first in the houdini.env file. (Windows requires a semi-colon) For example:

HOUDINI_PATH=$RFHTREE/1718.50.460532:&

RenderMan for Houdini 23 with Solaris now requires an additional line in the configuration file:

RMAN_PROCEDURALPATH = $RFHTREE/18.0.532/openvdb:&

RenderMan for Houdini 23 on Windows now requires an additional line in the configuration file:

PATH=$RMANTREE\bin;&

Additional instructions and details are found below in this document.