title: canDisplayBannerAds = YES causes Sprite Kit app to crash
body: <p>Working on my first game and trying to implement ads in to it.</p>
  
  <p>I've declared the following in my viewController.h</p>
  
  <pre><code>#import &lt;UIKit/UIKit.h&gt;
  #import &lt;SpriteKit/SpriteKit.h&gt;
  #import &lt;iAd/iAd.h&gt;
  
  @interface ViewController : UIViewController &lt;ADBannerViewDelegate&gt;
  </code></pre>
  
  <p>And in my implementation file I've Got the following (used because I need landscape layout)</p>
  
  <pre><code>- (void)viewWillLayoutSubviews
  {
  
  
          [[NSUserDefaults standardUserDefaults] setInteger:0 forKey:@"Result"];
      [super viewWillLayoutSubviews];
      NSError *error;
      NSURL * backgroundMusicURL = [[NSBundle mainBundle] URLForResource:@"background-music-aac" withExtension:@"caf"];
      self.backgroundMusicPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:backgroundMusicURL error:&amp;error];
      self.backgroundMusicPlayer.numberOfLoops = -1;
      [self.backgroundMusicPlayer prepareToPlay];
      [self.backgroundMusicPlayer play];
  
      // Configure the view.
  
      SKView * skView = (SKView *)self.view;
      if (!skView.scene) {
        skView.showsFPS = YES;
        skView.showsNodeCount = YES;
  
        // Create and configure the scene.
        SKScene * scene = [MyScene sceneWithSize:skView.bounds.size];
        scene.scaleMode = SKSceneScaleModeAspectFill;
  
        // Present the scene.
        [skView presentScene:scene];
          self.canDisplayBannerAds = YES;
  
      }
  }
  </code></pre>
  
  <p>However when I run the app instantly crashes (log below) - if I change self.canDisplayBannerAdds = NO; the app runs fine - I have a feeling this is ridiculously simple but I can't see it for looking - anyone got any ideas?</p>
  
  <pre><code>2014-02-13 22:40:20.605 SpriteKitSimpleGame[2812:70b] -[UIView scene]: unrecognized selector sent to instance 0xcb354c0
  2014-02-13 22:40:20.608 SpriteKitSimpleGame[2812:70b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIView scene]: unrecognized selector sent to instance 0xcb354c0'
  *** First throw call stack:
  (
      0   CoreFoundation                      0x019fa5e4 __exceptionPreprocess + 180
      1   libobjc.A.dylib                     0x0177d8b6 objc_exception_throw + 44
      2   CoreFoundation                      0x01a97903 -[NSObject(NSObject) doesNotRecognizeSelector:] + 275
      3   CoreFoundation                      0x019ea90b ___forwarding___ + 1019
      4   CoreFoundation                      0x019ea4ee _CF_forwarding_prep_0 + 14
      5   SpriteKitSimpleGame                 0x00008169 -[ViewController viewWillLayoutSubviews] + 729
      6   UIKit                               0x0043321a -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 278
      7   libobjc.A.dylib                     0x0178f81f -[NSObject performSelector:withObject:] + 70
      8   QuartzCore                          0x0232e2ea -[CALayer layoutSublayers] + 148
      9   QuartzCore                          0x023220d4 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
      10  QuartzCore                          0x0232e235 -[CALayer layoutIfNeeded] + 160
      11  UIKit                               0x004ee613 -[UIViewController window:setupWithInterfaceOrientation:] + 304
      12  UIKit                               0x0040d177 -[UIWindow _setRotatableClient:toOrientation:updateStatusBar:duration:force:isRotating:] + 5212
      13  UIKit                               0x0040bd16 -[UIWindow _setRotatableClient:toOrientation:updateStatusBar:duration:force:] + 82
      14  UIKit                               0x0040bbe8 -[UIWindow _setRotatableViewOrientation:updateStatusBar:duration:force:] + 117
      15  UIKit                               0x0040bc70 -[UIWindow _setRotatableViewOrientation:duration:force:] + 67
      16  UIKit                               0x0040ad0a __57-[UIWindow _updateToInterfaceOrientation:duration:force:]_block_invoke + 120
      17  UIKit                               0x0040ac6c -[UIWindow _updateToInterfaceOrientation:duration:force:] + 400
      18  UIKit                               0x0040b9c3 -[UIWindow setAutorotates:forceUpdateInterfaceOrientation:] + 870
      19  UIKit                               0x0040efb6 -[UIWindow setDelegate:] + 449
      20  UIKit                               0x004e0737 -[UIViewController _tryBecomeRootViewControllerInWindow:] + 180
      21  UIKit                               0x00404c1c -[UIWindow addRootViewControllerViewIfPossible] + 609
      22  UIKit                               0x00404d97 -[UIWindow _setHidden:forced:] + 312
      23  UIKit                               0x0040502d -[UIWindow _orderFrontWithoutMakingKey] + 49
      24  UIKit                               0x0040f89a -[UIWindow makeKeyAndVisible] + 65
      25  UIKit                               0x003c2cd0 -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1851
      26  UIKit                               0x003c73a8 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 824
      27  UIKit                               0x003db87c -[UIApplication handleEvent:withNewEvent:] + 3447
      28  UIKit                               0x003dbde9 -[UIApplication sendEvent:] + 85
      29  UIKit                               0x003c9025 _UIApplicationHandleEvent + 736
      30  GraphicsServices                    0x027b12f6 _PurpleEventCallback + 776
      31  GraphicsServices                    0x027b0e01 PurpleEventCallback + 46
      32  CoreFoundation                      0x01975d65 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 53
      33  CoreFoundation                      0x01975a9b __CFRunLoopDoSource1 + 523
      34  CoreFoundation                      0x019a077c __CFRunLoopRun + 2156
      35  CoreFoundation                      0x0199fac3 CFRunLoopRunSpecific + 467
      36  CoreFoundation                      0x0199f8db CFRunLoopRunInMode + 123
      37  UIKit                               0x003c6add -[UIApplication _run] + 840
      38  UIKit                               0x003c8d3b UIApplicationMain + 1225
      39  SpriteKitSimpleGame                 0x0000979d main + 141
      40  libdyld.dylib                       0x0310570d start + 1
  )
  libc++abi.dylib: terminating with uncaught exception of type NSException
  (lldb) 
  </code></pre>