Use the Rhino command SetDotNetRuntime and make sure you are running .NETFramework and not NETCore.
You may also like
I get a wide variety of requests for assistance on shoemaking projects, ranging from hobbyist to R&D for businesses of all sizes. […]
First try to rebuild the model. You may need to press the pause button. In some cases, you might be able to […]
3DShoemaker is only available for Rhino on Windows and only in English. There currently are no plans to change this.
Please see our ordering policies here.