Oops-My mistake-I wasn't using the "Load" button in the UltraChannel DUI. I've got it figured out now. Sorry for the bandwidth!
I'm using Dig. Performer 8.05 and, while I see that the presets are installed in the correct place, they don't show up in the preset drop down within the UltraChannel GUI. I can click on "reveal presets in Finder" and navigate to (and see) the presets, but when I click on them they won't load. I get a message saying "there is no app set to open the document…" How do I get the presets to work in this case? There is no second preset window within DP, only the one in the UltraChannel GUI. There is only one user on this computer.