I’m using 2nd edition of the book on Xcode 4.1. Page 107 has me search for “MKCoordinateRegion”. The only reference I can find of that in the Apple API documentation is for the “C” language, not objective-C (nothing about a “Map Kit Data Type Reference” either). Was it changed to another name in Xcode 4.1? Or perhaps a different process? I’m still researching, but thought I’d post here as well.