Error loading local SWFs

Error: The loaded SWF file is not a presentation created with iSpring Pro
   at classes::iSpringTest/onMovieLoaded()[<path>\iSpringTest.as:54]
*** Security Sandbox Violation ***
SecurityDomain '<path>/swf/behavior.swf' tried to access incompatible context 'app:/iSpringTest.swf'

public function iSpringTest() {
   m_loader = new Loader();
         m_loader.contentLoaderInfo.addEventListener(Event.INIT, onMovieLoaded);
   //
   var appDomain:ApplicationDomain = new ApplicationDomain(ApplicationDomain.currentDomain);
   var context:LoaderContext = new LoaderContext(false, appDomain);
   m_loader.load(new URLRequest(File.applicationDirectory.nativePath + "/swf/behavior.swf"), context);
}
      
private function onMovieLoaded(e:Event):void {
   var contentInfo:LoaderInfo = LoaderInfo(e.target);
   m_playerView = contentInfo.content;
         
   // Query IPresentationPlayerContainer interface of the loaded SWF file
   m_playerContainer = m_playerView as IPresentationPlayerContainer;
   if (m_playerContainer == null)
   {
      // The loaded file is not an iSpring presentation
            throw new Error("The loaded SWF file is not a presentation created with iSpring Pro");
   }
         
   // Wait for the player to initialize
         //m_playerContainer.addEventListener(PlayerContainerEvent.PLAYER_IS_AVAILABLE, onPlayerAvailable);
         
   // Add the presentation to stage
         addChild(m_playerView);
         
   trace("contentInfo: " + contentInfo);
   trace("m_playerView: " + m_playerView);
   trace("m_playerContainer: " + m_playerContainer);
}