Just installed plugins_dev_PollinationGHPluginInstaller-1.6.0
trying to solve other issues with the Plugin.
Now the plugin has vanished out of Rhino!?
Think that’s not how it is intended to be?
Loaded but no panel available
Hi @martin6, What happens when you ran the pollination command? Does the panel show up?
No nothing
I just read your message again carefully! 
This is happening because you are installing the Grasshopper plugin and not the Rhino + Grasshopper installer.
The Rhino plugin comes with the Grasshopper plugin you don’t need to install the Grasshopper plugin separately.