title: Thread error with MKMapView and UIImagePickerController
body: <p>So I'm building a photo map app. I have a MKMapView and I got the camera going with UIImagePickerController, I take a picture, then return to the map. Tho when I try to pan the map after that, I get a thread error:</p>
  
  <pre><code>2017-05-04 16:58:11.611796+0200 Hex Pics[3569:1402345] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArray0 objectAtIndex:]: index 1 beyond bounds for empty NSArray'
  *** First throw call stack:
  (0x18ecfefe0 0x18d760538 0x18ec6aeb4 0x1006690a4 0x100668f60 0x10067a0ac 0x100073088 0x100073c10 0x18f7f3770 0x18ecadaa4 0x18ecad7a8 0x18ecad068 0x18ecaac8c 0x18ebdada4 0x190644074 0x194e95330 0x10007d0c8 0x18dbe959c)
  libc++abi.dylib: terminating with uncaught exception of type NSException
  </code></pre>
  
  <p>Dose anyone have any idea what could be causing this?</p>