Mapquest has always had free turn-by-turn driving directions. It actually finds street addresses for new residential developments that even Google Maps doesn’t find. Naturally, I want to use it now that I’m on iOS 6 because of the very poor performance of Apple Maps, which can’t find simple local addresses unless they’re spelled exactly the same way as they appear in Apple’s data (which often includes non standard abbreviations).
I noticed an update available and got this error from what appears to be an updated “app store” in iOS 6. Maybe this isn’t really an error, but a covert strategy to force use (free R&D for Apple) of their new attempt at being Google.