In addition to the devices in the image, there's now another HR21-200 in the system.
Everything works great, except I can't play back premium movie channel recordings on the HR20. Until 2 nights ago I thought this was only true for recordings that do not reside on the HR20 itself, but then Sunday an HBO movie recorded on the HR20 wouldn't play back on the HR20. Other network programming playback is flawless, but HBO, Cinemax, etc. programming, when played on the HR20, results in a black screen and frozen HR20.
I can power the device off and back on to get going again, but "off" seems to be the only command it recognizes while frozen. The program that was attempted then shows up in the play list as if playback was begun. The playback can be "resumed" on any of the other devices. All other receivers in the system play back any and all recordings without issue.
Any ideas for a fix?