.framework/MapKit, file was built for i386 which is not the architecture being linked (armv6) Undefined symbols: "_OBJC_CLASS_$_MKAnnotationView", referenced from: objc-class-ref-to-MKAnnotationView in MapViewController.o ld: symbol(s) not found collect2: ld returned 1 exit status
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The problem is most likely that the project is not including the ImageIO framework. Go to your Target -> Build Phases -> Link and verify that in fact you have ImageIO there.
2 MapKit
