Amazing collection of resources, but I've encounter the "0 cars problem" in Monaco. Did what you said probably millions of times hehe (install the track first, then the extension) and here Is where I think I found the issue. The Monaco extension is not the right one for the one provided on your links. The Monaco extension has to be for the monaco_2020 track and what we have is another version, maybe from another creator. The folders even have different names. Any way to fix this?