Okay thanks. Next check is to start Rhino afresh and run the _GrasshopperDeveloperSettings command and click on the Valid Folders button. It should list all the folders from which plugins will be loaded. I’d like to see that list, mine looks like this:
Then, instead of _Grasshopper, run the _GrasshopperLoadOneByOne command. Does the CurveComponents.gha plugin make an appearance? It’s the first one I see on my machine.