Grasshopper Plugins not loading

The load one by one approach allows you to figure out which plugin is causing problems, however it all plugins load fine this way then the problem seems to be one of timing. One of the plugins is doing something during its load process which fails when the load happens quickly but succeeds when it’s slow.
This does sound somewhat unlikely, so I’m hoping I’m wrong and there’s another explanation…

What you can try is deliberately disabling each plugin to see when the loading starts to work as expected. You can do this in Rhino6 by putting a file next to the plugin which has the same name, but a .no6 extension. So if you want to not load a plugin called SomeAnimal.gha, but an empty text file next to it called SomeAnimal.no6.