The website is down at the moment so here is the same file as above
https://www.dropbox.com/s/ca06iq6xxgza20y/ReaTrak_Region_Chord_Player.ReaperConfigZip?dl=1
it has all the latest scripts the one in the forum ReaTrak_ver.46.ReaperConfigZip is the latest but without the chord player, once this is working ok I'll add it to the ReaTrak_ver.47.ReaperConfigZip release.
Use the guide above to install into Reaper, there a youtube video as well.