Yes just got it to work. I find that lots of the working part of add-on sceneries are inside the main file. When I first downloaded I put the whole thing in the scenery directory, ended up with no buildings until I found the main file.
another minor pet peeve, why is it that there never is a read me on most files that tells you what libraries are needed? Just inconvenient to go back to the .org and look up the file again to know which ones were required.