Requesting BASELINE_EXTENDED profile in air 3.9 or 4.0 causes error

Question

This line of code
stage.stage3Ds[0].requestContext3D( Context3DRenderMode.AUTO, Context3DProfile.BASELINE_EXTENDED );
causes error "Error #2008: Parameter profile must be one of the accepted values." if app is compiled for desktop with air sdk 3.9 or air sdk 4.0 beta (didn't tried another sdk's). Compiling for web works fine. So what is this error? Where can I find information?

Answer 1

Just made a quick test on 3.9, Application, set to direct render of course, no issue:
package
          import flash.display.Sprite;
          import flash.display.Stage3D;
          import flash.display.StageAlign;
          import flash.display.StageScaleMode;
          import flash.display3D.Context3D;
          import flash.display3D.Context3DProfile;
          import flash.display3D.Context3DRenderMode;
          import flash.events.ErrorEvent;
          import flash.events.Event;
          public class CX3D extends Sprite
                    private var s3d:Stage3D;
                    private var rc:Context3D;
                    public function CX3D()
                              stage.align = StageAlign.TOP_LEFT;
                              stage.scaleMode = StageScaleMode.NO_BORDER;
                              s3d = this.stage.stage3Ds[0];
                              s3d.addEventListener(Event.CONTEXT3D_CREATE, onContextF);
                              s3d.addEventListener(ErrorEvent.ERROR, contextErrorF );
                              s3d.requestContext3D(Context3DRenderMode.AUTO, Context3DProfile.BASELINE_EXTENDED);
                    private function contextErrorF(e:Event):void
                              trace('Error ' + e);
                    private function onContextF(e:Event):void
                              trace('Created ' + e);
                              rc = Stage3D( e.target ).context3D;
               trace(rc);
Trace:
Created [Event type="context3DCreate" bubbles=false cancelable=false eventPhase=2]
[object Context3D]
(used a TextField for output in my finished .exe)
edit:
Although unlikely, if your desktop GPU is old enough it very well may not support that mode.