Cannot locate Pollination Rhino plugin

That’s helpful. Yes. This is telling me that the wrong DLLs are being loaded from another installation.

Can you try the PluginManager command and see where the DLL is loaded from. You might need to uninstall or delete an older version of the plugin manually.

  1. Run the PluginManager command.
  2. Search for Pollination.
  3. Select Pollination.RH and click on details.
  4. Check the File Name. It should be C:\Program Files\pollination\plugin\8.0\Pollination\Pollination.RH.rhp

Also, if you have multiple versions of Rhino, you might need to ensure to only install it for Rhino 8 to help Rhino 8 find the correct DLLs. See here: