Hi Patricia - Can you ask this question on the pymol-users mailing list? You need to subscribe first at http://pymol.org/maillist and then you can send emails to the list.
Hello Dan - Just install https://pymol.org/tmp/kvfinder_pymolplugin_linux.py with PyMOL's plugin manager.
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What does PyMOL 1.8 report as "OpenGL graphics engine" and what OpenGL version does it detect?
Does it work headless? pymol -c scriptt.pml This looks suspicious: "OpenGL Renderer : (Unknown)"
enable vmd plugins by default
cartoon_transparency doesn't support residue/chain based sel
Implemented in PyMOL 2.3