SKScene did not draw Scene after presenting a Picker/Browser - ios

Question

I have a ViewController in which i present my SKScene. So before i present the SKScene i use the UIImagePickerController in the ViewController to take a picture and in the
-imagePickerController:didFinishPickingMediaWithInfo:
when the UIImagePickerController dismiss i start to present the scene and initialize it :
[self dismissViewControllerAnimated:NO completion:nil];
SKView * skView = (SKView *)self.view;
skView.showsFPS = NO;
skView.showsNodeCount = NO;
// Create and configure the scene.
MultiplayerScene * scene = [[MultiplayerScene alloc]initWithSize:self.view.frame.size andPicture:self.imageView];
scene.scaleMode = SKSceneScaleModeAspectFill;
// Present the scene.
// --This works also just on the Simulator and not on Physical Device
[scene setBackgroundColor:[UIColor redColor]];
// --
[skView presentScene:scene];
So, what happened in the Simulator it seems to work my Image is showing on the Screen,, but on physical device the picker dismiss and i see just the gray Background.
I have tried 2 Days to fix this but i actually i think that the problem is that the SKScene isn't first responder or will not initialize correct, but when i debug on the physical device the picture comes correct.
The Same Problem will be produce with any type of Picker / Browser.
On the GrayBackground (the default color for SKScene) the touch-events are working
What can i do here to handle it right?
Best
Konstantin
SOLVED
Today i update my Xcode to 5.1 and then everything works fine (head meets table)... Thanks for Mc.Lover for his clear answer!!

Answer 1

Do something like this :
- (void)myMethod {
MultiplayerScene * scene = [[MultiplayerScene alloc]initWithSize:self.view.frame.size andPicture:self.imageView];
scene.scaleMode = SKSceneScaleModeAspectFill;
[skView presentScene:scene];
}
[self dismissViewControllerAnimated:NO completion: ^ {[self myMethod]; }];
hope this helps !