I created application for MKMapView in iOS application to display map in my iPhone.
while running i got this
*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<ViewController 0x9847150> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key mapview.'
Most probably you might have created an outlet called
mapview and deleted it later. Check whether the outlets of MapView is broken in Xib/Storyboard.