NativeApplication is Null on Windows

This code works perfectly on the Mac, but fails miserably on Windows.

private function stage_resizeHandler(event:Event):void

{

                              var sanitizedStageHeight:Number;

                              var sanitizedStageWidth:Number;

                              var stageAspectRatio:Number = stage.stageWidth / stage.stageHeight;

                              //var chromeHeight:Number = NativeApplication.nativeApplication.activeWindow.height - stage.stageHeight;

                              var chromeHeight:Number = stage.nativeWindow.bounds.height - stage.stageHeight;

                              //var windowBorders:Number = NativeApplication.nativeApplication.activeWindow.width - stage.stageWidth;

                              var windowBorders:Number = stage.nativeWindow.bounds.width - stage.stageWidth;

                              //if stage width is greater than application aspect ratio then base the width on the stage height

                              if (stageAspectRatio > 1.33333333)

                              {

                                        sanitizedStageHeight = stage.stageHeight;

                                        sanitizedStageWidth = (stage.stageHeight / (768 - chromeHeight)) * 1024;

                              }

                              else

                              {

                                        sanitizedStageHeight = (stage.stageWidth / (1024 - windowBorders)) * 768;

                                        sanitizedStageWidth = stage.stageWidth;

                              }

                              this.scaleX = sanitizedStageWidth / (1024 - windowBorders);

                              this.scaleY = sanitizedStageHeight / (768 - chromeHeight);

                              this.x = (NativeApplication.nativeApplication.activeWindow.width - (this.scaleX * 1024)) / 2;

}

The other bug with using bounds is that it's value return the value from before the resize event was fired instead of what it is after the resize, which is completely useless.

And this is wrong too on Windows, stage.nativeWindow.bounds.height

???