As of 6/24/2024 using Godot 4.2.2 Stable, I had to make sure the folder was just "GodotSky" and not "GodotSky 1.2" then I disabled any enviroment add ons I added, got rid of them out of my scene. Closed Godot, moved the "GodotSky" over to the res:// folder and then added the .tscn to my scene. After that it just worked, otherwise I had to keep fixing things.