title: as3 Security Sandbox Violation
body: <p>I've read all similar topics already with no luck, so I'm posting a new question about this error.   </p>
  
  <p>I am trying to load a swf file from another swf file using this code:</p>
  
  <pre><code>var loader:Loader = new Loader()
  
  //listen for loading progress
  loader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgress);
  
  //listen for when the load is finished
  loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
  
  loader.contentLoaderInfo.addEventListener(SecurityErrorEvent.SECURITY_ERROR, onLoaderError);
  
  //load!
  var rr:URLRequest = new URLRequest("http://localhost/Gen-Tree.swf")
  loader.load(rr);
  
  
  function onLoaderError(event:SecurityErrorEvent) {
      trace("hi")
  }
  
  function onProgress(event:ProgressEvent):void
  {
      //calculate how much has been loaded
      var percentageLoader:Number = event.bytesLoaded / event.bytesTotal;
  
      //use your percentage number here to drive a loader bar graphic
  }
  
  function onComplete(event:Event):void
  {
      //remove listeners now that loading is done
      loader.contentLoaderInfo.removeEventListener(ProgressEvent.PROGRESS, onProgress);
      loader.contentLoaderInfo.removeEventListener(Event.COMPLETE, onComplete);
  
      //add loaded swf to the stage
      addChild(loader.content);
  
  }
  </code></pre>
  
  <p>and I get an error messages as follows:</p>
  
  <pre><code>SecurityDomain 'http://localhost/Gen-Tree.swf' tried to access incompatible context 'file:///C|/Users/Alex/Desktop/Gen%2DTree%202012/Programming/loader.swf'
  *** Security Sandbox Violation ***
  SecurityDomain 'http://localhost/Gen-Tree.swf' tried to access incompatible context 'file:///C|/Users/Alex/Desktop/Gen%2DTree%202012/Programming/loader.swf'
  *** Security Sandbox Violation ***
  SecurityDomain 'http://localhost/Gen-Tree.swf' tried to access incompatible context 'file:///C|/Users/Alex/Desktop/Gen%2DTree%202012/Programming/loader.swf'
  </code></pre>
  
  <p>Any ideas?</p>