How to reproduce:

1. Open attached project
2. Open scene Scenes/Game.unity
3. Play the scene
- Wait about 10 seconds after the scene is played (to allow the game to settle down)
4. While the Game window is in focus, switch to a different application
- Note that there is an error in the console:
NullReferenceException: Object reference not set to an instance of an object
at MediaPlayerCtrl.Call_UpdateVideoTexture () [0x003ae] in /Users/Rigel/Downloads/case_793216-zen.baccarat/Assets/EasyMovieTexture/Scripts/MediaPlayerCtrl.cs:2495
at MediaPlayerCtrl.Update () [0x00145] in /Users/Rigel/Downloads/case_793216-zen.baccarat/Assets/EasyMovieTexture/Scripts/MediaPlayerCtrl.cs:442

(Filename: Assets/EasyMovieTexture/Scripts/MediaPlayerCtrl.cs Line: 2495)

5. Switch back to Unity
- Unity crashes immediately and the Bug Reporter is launched

- Reproduced in Version 5.4.0b17 (d34aa569a642), Version 5.3.4p4 (43a3882ae25c)
- Blocked from testing 5.2