I\'ve just enrolled in Apple\'s iOS Developer Program (account type: Individual).
In my Xcode organizer on my iPhone 4 device I click \"Add device to provisioning portal
Actually, my initial goal was to be able to test my app on iPhone device. Clicking "Add device to provisioning portal" still results into the subject error, but anyway my iPhone device have been added somehow to the Provisioning Portal and now I can see my app on iPhone (I haven't even tried to add it via iOS Dev Center). My guess is that this procedure takes multiple steps to be completed, and only the last of them still fails now, while the rest of them do succeed.