@wim Rhinogold is probably not involved …but you have the option with Rhinogold to run it in the Rhino GUI or the RG. I have always run it in Rhino. I believe this is still the same with the current RG6 or what ever it is…not sure what number they are up to since Stuller bought them out.
If you have RG4 plugin active in the Rhino GUI it loads a heap of panels on startup by default. Which if you do not want like like me gets really annoying as you have to close them every time you start Rhino.
RhinoGold also usually adds a menu to the top of Rhino…which @Yehuda_Daniel does not appear to have. I removed mine.