This also happened to my client.

The latest version (20.1) gives the same error message. I downloaded it again just to be sure.

Note for anyone looking for support, this is the only forum free tier users can post in. None of the other forums are accessible.

With that said, I've got everything up and running, but having issues with volumes. In Cycles and Eevee, volumes are done via principled volume shaders plugged into the ...