OK, I get it now--sorry for being a little slow on the uptake. So luvtrains' rrt used Fastrack and since I don't have the Fastrack library, when I open his layout it just shows the track as "generic" track.
Thanks for the explanation.
I did update RR-Track to the latest version build of 5.2 and so far it seems to be working fine with my layout. (Win 8.1 with all updates)
I also downloaded the generic buildings library.