Open Radar

 
Summary:
When sending video to an Apple TV via AirPlay my iPhone app crashes

- Create a new single-view iPhone app
- Add the 'audio' mode to the app's 'Required Background Modes' in the info.plist (so that AirPlay playback will continue if the screen is locked or the app is suspended).
- Add a 'play' button to the view and hook it up to a 'play:' action
- Add the MediaPlayer and AVFoundation frameworks
- Implement the 'play:' method to set an appropriate Audio Session category and create and present an MPMoviePlayerViewController
- Run the app and choose to send the video to an Apple TV via AirPlay.
- Suspend the app and lock the screen
- Press the home button to attempt to wake up the iPhone

Expected Results:
- The video will continue to play on the TV screen connected to the Apple TV whilst the app is suspended and I'll be able to lock/unlock my screen and use other apps etc.

Actual Results:
- The app crashes and video stops playing on the Apple TV.

Regression:
- The crash happens on my iPhone 4S that is running iOS5.0.1 (9A405) but the exact same code works fine on my iPad2 that is running iOS5.0 (9A334).