title: UIImagePickerController exception : "Source type must be UIImagePickerControllerSourceTypeCamera"
body: <p>what is wrong with this? I really don't understand some important parts for UIImagePickerController....</p>
  
  <p>here's the source:</p>
  
  <pre><code>     UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
  imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
  imagePickerController.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;        
  imagePickerController.delegate = self;
  [self presentModalViewController:imagePickerController animated:YES];
  [imagePickerController release];
  </code></pre>
  
  <p>Can't I open the photo library?
  Any help appreciated!</p>