The rabbit hole goes deeper than that.

I thought it should be a quick fix too, so to test I deleted my Octane toolbar...

I manually added a freshly unzipped octane.shelf file, but nothing. I spent an hour going through the various xml files in the 20.5 directory, and comparing them with the ...

I get the same error.

Any ETA on a Linux release?

Found the problem - missing freeGLUT, the plugin works now (Linux doesn't require the second path variable), but I have had to send an email to support since my licenses aren't recognized now even though the web interface shows them active on my machine.

Linux Mint 20.1 / Nvidia Driver 460.56

only entry in houdini.env:

HOUDINI_PATH = "/home/john/houdiniall/Octane_2020.2.3.0_Houdini_Linux_studio/Octane_2020.2.3.0_Houdini_18.5.532_Linux_gcc6.3.1_vr;&"

Doesn't seem to be python 3, I installed the Python 2 version and still get the errors:

Traceback (most recent call last):
File "Add_Octane_ROP", line 1, in <module>
File "/opt/hfs18.5.532/houdini/python2.7libs/roptoolutils.py", line 10, in createRenderNode
rop = hou.node('/out').createNode(rop ...

Does this work with Python 3 Houdini builds? On 18.5.532 the shelves show up but all the shelf items throw errors.

ie:

Traceback (most recent call last):
File "Add_Octane_ROP", line 1, in <module>
File "/opt/hfs18.5.532/houdini/python3.7libs/roptoolutils.py", line 10, in createRenderNode
rop ...

Is there any roadmap for a linux release for Solaris?

When looking for help you should post all the information available including your hardware specs, operating system and graphics driver version and octane versions

I have now tried everything including a fresh installation of windows/nvidia/houdini/maya & octane. Octane 2019 standalone or plugins will run. Octane 2020 standalone or plugins will not run. Even as a temporary solution I can't use Octane 2019 for houdini as it does not have a build for houdini ...