Whole Home Service Disconnecting

Hi
Here is my setup:

Slimline Disk r (supports 8 tuners) to Power Inverter
H23-600 with a DECA
HR-22-100 with a DECA
HR34 connected as follows: hard-wired ethernet cable to an Airport Express that is wirelessly connected to an Airport Extreme Base Station that is the wireless router for my home (connected by hard-wired short ethernet to a DSL modem box).
IP address distribution by the Airport Extreme Base Station is DHCP

There is no external CCK on the HR34; they said that I didn't need one. Seems like these boards confirm that.


All worked fine after install from DTV, including whole home functionality (about three months ago the HR34 and DECAs were installed and WH activated)
DirecTV Apps on the HR34 still works now.
But no receiver can see any other receiver's playlist.
This has occured both times after I have used the Whole home feature by watching on the H23 a show that was recorded on either the HR-24 or in this latter case the HR34.
After I watched the show, I deleted it in the first case from the H23 and in the second case directly from the HR34. They deleted fine and they recorded and played fine.
The first time (a few weeks ago), I reset everything with the red buttons and the reset the modem and it was fine.
I tried that again two days ago after the second time and it didn't change anything; did it in this order: all receivers off (but not unplugged), unplug the modem and replug in/reset; then turn on and red reset button the HR34 then the H23 then the HR24.

I will try unplugging everything including the power injector but what can I do to stop this from happening again (and other than the above get it back working even now)?