@nathanletwory I’m still running into trouble here. Have you found a way to define UserData types in your supporting dlls? From what I’m finding this may not be possible. I’m getting the same NullReference discussed here: https://discourse.mcneel.com/t/add-userdata-object-reference-not-set-to-the-instance-of-an-object/64877
Might need to go back to referencing the rhino project from the gh project, although I’m sure this will present its own problems. Just seems like there must be a way to instantiate custom user data from GH??