Import for runtime sharing error

Hi all,

I have in my project  4 files listed below:

* lib.swf

* sceneA.swf

* sceneB.swf

* loader.swf

1) "lib.swf" - contains two MovieClips, "mc_A" and "mc_B"  with "Export For Runtime Sharing" checked.

2) "sceneA.swf" - contains in the stage "mc_A" (copied from "lib.swf"). This MovieClip is checked with "Import For Runtime Sharing" in the library.

3) "sceneB.swf" - contains in the stage "mc_B" (copied from "lib.swf"). This MovieClip is checked with "Import For Runtime Sharing" in the library.

4) "loader.swf" - initially loads the "sceneA.swf" file. When the user click on the stage it loads "sceneB.swf". Its first frame contains the following code:

=================================

import flash.events.MouseEvent;

var myLoader:Loader;

function loadScene(url:String)

{

    myLoader = new Loader();

    myLoader.load(new URLRequest(url));

    myLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, on_sceneLoaded);

}

function on_sceneLoaded(e:Event):void

{

    myLoader.contentLoaderInfo.removeEventListener(Event.COMPLETE, on_sceneLoaded);

    addChild(myLoader);

}

stage.addEventListener(MouseEvent.CLICK, on_mouseClick);

function on_mouseClick(e:MouseEvent)

{

     removeChild(myLoader);

    myLoader.unload();

    myLoader = null;

    loadScene("sceneB.swf");

}

loadScene("sceneA.swf");

=================================

When I execute "loader.swf", the first file "sceneA.swf" is loaded correctly.... but when the user clicks on the stage the following message is displayed:

"ReferenceError: Error #1065: Variable mc_B is not defined."

What is the problem with my code?

The project files are here: http://www.magistec.com.br/gustavo/Project.zip

Thanks

Gustavo Lima