However, the compilation still fails with the following error: Loading assembly failed: “Assets/RhinoInside/Microsoft.VisualBasic.dll” reason: File does not contain a valid CIL image
This exact same problem was reported here some time ago:
But since there was no reply, I wanted to ask if this this Rhino / Unity workflow is still supported?
The Rhino Inside Unity project was just a technology demonstration that others could use to build upon.
As you can see from the GitHub page that you linked to, one of the prerequisites was Unity 18.3. The Rhino WIP at the time was Rhino 7. This is likely going to need a bit of work to function for Unity 6 and Rhino 8.
-wim