The windows registry key that shows which SpeckleRhino plugin is registered with Rhino. The list may not be exhaustive, but it’s a start) a list of folders that have speckle rhino, or general speckle plugins. the location that grasshopper has loaded the Speckle components from (orange panel). I have created a test grasshopper file that will show you: C:\Program Files\Rhino 6\Plug-ins: I’m not quite sure how it could get here, but it’s possible…. %APPDATA%\McNeel\Rhinoceros\packages\6.0\: If you install the plugin via the package manager, it will go here (but you can’t yet, so if it’s here I have no idea what’s going on). C:\Program Files\Common Files\McNeel\Rhinoceros\6.0\Plug-ins: If you installed the SpeckleRhino RHI file directly, and select ‘All Users’, it might be here. %APPDATA%\Roaming\Grasshopper\Libraries: If you dragged the SpeckleGrasshopper.gha file onto the Grasshopper canvas, it might end up here. %APPDATA%\McNeel\Rhinoceros\6.0\Plug-ins: This is where the main Speckle installer puts it. This will be mosly relevant for those of us who have been using Speckle for a while and have installed and reinstalled the components in various ways… Anyhow, I spend a few hours tracking this down, and thought I’d share what I’ve found: If you are having trouble with the Grasshopper plugin, and want to uninstall and reinstall it, there are a few places you might have to look.