can you build a simple example scene with the volume shape option "mesh" ?
there is not like that in the example scenes and i become no output in IPR.
p.s.
Volumetric Mode is Procedural and the Volumetric Node Editor is right connected (octane scattering medium > medium and fmb noise for example in the red colored inputs...like absortion/scattering/emission)
i become no visible output...somethings is wrong in my set up...
Thanks

snip lwguru