title: Method does not reach Completion Block
body: <p>I'm using the <code>SKStoreProductViewController</code> to display an iTunes product with the following method. The method gets called, but I get no success or error. Any idea why?:</p>
  
  <pre><code>@IBAction func BuySomething(sender : AnyObject) {
  
      NSLog("%@","called");//gets called
  
      let storeViewController:SKStoreProductViewController = SKStoreProductViewController();
  
      storeViewController.delegate = self;
  
      var someitunesid:String = "676059878";
  
      var productparameters = [SKStoreProductParameterITunesItemIdentifier:someitunesid];
  
      storeViewController.loadProductWithParameters(productparameters, { (success: Bool!,          error: NSError!) -&gt; Void in
          if success {
              NSLog("%@",success)//no call
              self.presentViewController(storeViewController, animated: true, completion: nil);
          } else {
              NSLog("%@", error)//no call
          }
      })
  }
  </code></pre>