title: Error #2025: The displayObject must be a child from the caller
body: <p>Hello i am having troubles with a presentation that has some videos on a frame,I have made some buttons to watch each video and when i move to the next frame it's ok,the video is "gone" and i can read the info on that frame correctly but the problem is when i try to go forward, it just don't move, like if it was stuck or something.
  This is the code that i have:</p>
  
  <pre><code>var video10:Video=new Video();
  var conexion10:NetConnection= new NetConnection();
  miguel_btn.addEventListener(MouseEvent.CLICK,video_miguel);
  function video_miguel(event:MouseEvent):void
  {
     var mensaje10:String="MIGUEL ANZALDUA"
  puesto_txt.text=mensaje10
  var mensaje10_1:String="HR MEXICO"
  puesto2_txt.text=mensaje10_1
  conexion10.connect(null);
  var display10:NetStream= new NetStream(conexion10);
  display10.play("Miguel_1.flv");
  video10.attachNetStream(display10);
  video10.x= 150;
  video10.y= 250;
  stage.addChild(video10);
  display10.addEventListener(AsyncErrorEvent.ASYNC_ERROR,nomostrar10);
  function nomostrar10(event:AsyncErrorEvent):void
  {
  }
  }
  
  stage.addEventListener(KeyboardEvent.KEY_DOWN, handleKeyDown10);
  function handleKeyDown10(ke:KeyboardEvent):void {
      if(ke.keyCode == 39) 
      {
      stage.removeChild(video10);
      }
  }
  </code></pre>
  
  <p>I read some answers here but i cant figure it out.
  I really dont know what can it be happening.
  Thank you.</p>