Thanks a lot Erik. The problem was this one:
You chose Ad Hoc profile and not Developer which is for native dev? > I could have sworn that the cert and profile that I've been using successfully have both been "dev". In fact, I have the files named to reflect this "fact". Perhaps I was wrong. Perhaps there's some other explanation for why they were working. In any case, a distribution certificate and ad hoc profile are working for me now, and I'm both relieved and grateful! Douglas PS - I've added your list to my "Programming Notes" file for future reference. :)