I don't know if you're updating this to work with Sketchup 2021 (Running macOS Big Sur), but the only functions of this plugin I can use are "Classic Bezier Curve", "Polyline", "Catmull Spline", "F Spline", and "Courbette". From tutorials I can find, the other tools are supposed to bring up a Parameters dialogue box (or contextual menu based on what the Rubi Console says), which I can't get to appear no matter what I try.
A good example of this is the action in this sketchup discussion: https://forums.sketchup.com/t/divide-existing-arc-into-equal-segments/74870/2
I, more specifically, am trying to get an ellipse with equally sized segments as is demonstrated with your tool in this sketchup discussion: https://forums.sketchup.com/t/elliptical-array/17102/13
If you have any suggestions to fix this, let me know please.
DarthKeidran.