i just re-read the thread of this post and noticed that COMPAS is added to your system environment variables. if you installed COMPAS using conda this is not necessary.
could you try removing it and run the example again (after restarting Rhino), just to make sure i am trying to solve the correct problem, because i have a hard time reproducing it on my system…
just to be clear, COMPAS_FEA should indeed be on the PYTHONPATH, just not COMPAS.
sorry for the inconvenience, but we will get to the bottom of this!