title: Xcode 6.1 - Map View appears blank in iOS7 simulator or iPhone 4
body: <p>Since I last updated to Xcode 6.1 and Yosemite, the map views in my app started to appear blank either in ios7.1 simulator or my iPhone4 (iOS7.1). <br>
  I could replicate the situation by creating a brand new single view application with just a MKMapView and although it appears correctly in iOS8 simulators, in the iOS7.1 simulators or my iPhone4 it shows only a blank screen. The iOS Deployment Target is set to iOS 7.1.<br>
  I tested this simple app in a friend's Mac with Mavericks but the same situation occurs.<br>
  Is this some bug of Xcode 6.1 or SDK, or do I have to add something to run maps on iOS7?</p>