I had the same experience as you wildbill. Everything was set up and the 2 HR24s weren't working correctly. The installer checked everything, made a couple phone calls, rebooted/unplugged/restarted the receivers and was baffled. I remembered seeing this thread and saw that you did a satellite setup again to get it to work. Sure enough, DECA, MRV all started working perfectly.
Great tip by wildbill, people should keep this in mind for new HR24/MRV installs as the techs don't always seem to know to do this!