I have a Samsung BD-E5400 blu-ray, Win 7, latest Mezzmo (3.0.2), wireless router

Two changes recently. Got a HD DVR (HR24) from Directv with its router.
Only other change is to my PC, I applied some windows updates recently that didn't install properly.

From the Smasung player, the Directv DVR was added to the list of devices, though it can't access them due to format.
The Mezzmo "server" was unchanged (still listed) until last week, when it disappeared. I rebooted the PC, router and cable modem
and it reappeared. Now for the last 2 days, Mezzmo has disappeared from the list and I cannot get it back.

From Mezzmo, I deleted the Samsung device because it was all 0's in the IP address. It automatically added it back
when I restarted Mezzmo with the correct IP.

This is very frustrating since it was working fairly well for a couple of months.