Seems to add the spawns fine, but when I go to list them or start them, all i get is unknown command. But if i just do /ss with no params, i get the help for the command, so it is loaded.
Unknown command when using paramaters
What exactly did you write?
/ss "cavezombie1" start
and without ""
Unknown Command
You dont have to add the name there.
Use /ss <item|prefab> start
So if you added the "cavezombie1" as prefabs, just use:
/ss prefab start