Update, 2 Apr: The problem was that the 7000 is not an RID box, and I thought it was. Reinstalling and leaving out the hacked "dssapp" made it go.
Well that was fun -- not. jungar and I just spent five hours trying to upgrade my Philips DirecTivo with the dead disk. We got it to boot, but when I had DTV re-activate the card, it wasn't able to get signal on any channel other than 100. So I'm back on the R10 again with the blurry-as-hell video output. Grrr.