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      Latest reply on Jul 4, 2019 12:43 AM by Tomato
      Tomato Level 1 Level 1 (15 points)

        I have a Cocoa application that I developed last August (2018).  It was working properly under Sierra.  When I now debug it with Xcode 10 under Mojave, it works.  But when I launch the stand alone application, the view of the application window will turn blank.  If you place a push button over the view, it won't appear.

         

        I have finally tracked the source.  The application has AVPlayerView as an IBOutlet object wired to a view controller.  I am quite certain that it is AVPlayerView that has caused a lot of trouble.  If I remove AVPlayerView from the storyboard and also from the view controller, the view of the application window will appear.  Does anybody run into the same issue?