Just a brief update, fwiw. I checked my box of old parts from when the upgrade was performed and found both the ID40 card (so yes, there was the upgrade to ID41 as part of the .5 upgrade) and another card that has "digital output" printed across the top. But I also clearly have a digital output card in the unit now, so I have to assume that this card also was 'upgraded' at the time--though if it doesn't work, it hardly seems like an upgrade.

I did go through all of the settings, and the manual, again and failed to see where I could enable/disable MHR encryption. So I'm assuming that I need to load and dig into the Meridian Configuration Program (which I haven't really needed to use in the past). So that's my next step.

Thanks for everyone's help.

Sooloos C15, 2x2TB TwinStores, Meridian 808.5, BSG Tech QOL, Allnic L-5000, FirstWatt SIT-1s, Zu Dominance; Modwrighted Oppo BDP95, Classe SSP-800, Sony VPL-VW50 Pearl.