I dont know how this could have happened, but importing this mock inventory destroyed just about everything in my game. All of the scripts on every prefab I had are now “missing”, and I am inundated with thousands of null reference compiler errors. Also many of the scripts I had from the combat course either duplicated or had their namespaces changed.
Maybe I should have read this import more carefully, I was somehow under the impression that this is just the inventory UI pack. Unfortunately I spent all morning working on updates to my game and did not back up before importing, because I trusted the course…