Using Loader.loadBytes - specify SecurityDomain for loaded swf?

Question

Hi i have a problem.
I use Loader.loadBytes to dynamically load a swf into my app (i use this method to load modules into the app). My trouble is that when I want to use ExternalInterface.addCallback to allow js calls on my app. When those functions get called a SecurityError gets thrown because I'm not in the right Security Domain. Trying to set the SecurityDomain of the loaded content via LoaderContext results in another error telling me that SecurityDomain can't be other than null. Is there a way to actually get my modules accessible from JS?
*Note:
I have set in my main ap (the one that instantiates the module controller that loads the modules) the following:
Security.allowDomain("*");
Security.allowInsecureDomain("*");
the loading code:
var _contextLoader : LoaderContext = new LoaderContext(false, ApplicationDomain.currentDomain);
_contextLoader.allowCodeImport = true;
_moduleLoader.loadBytes(moduleBytes, _contextLoader);
The error:
SecurityDomain 'null' tried to access incompatible context ...

Answer 1

The loaded swf is at loader.content, but you can only access
it once the loading has completed and the loader has been added to
the display list. For example, CODE 1 will not work, but CODE 2
will.
//CODE 1
var myLoader:Loader = new Loader();
addChild(myLoader);
myLoader.load(new URLRequest("movie.swf"));
var loadedSwf:MovieClip = MovieClip(loader.content); //ERROR
//CODE 2
var myLoader:Loader = new Loader();
addChild(myLoader);
myLoader.load(new URLRequest("movie.swf"));
myLoader.contentLoaderInfo.addEventListener(Event.COMPLETE,
loadCompleted);
var loadedSwf:MovieClip;
function loadCompleted(ev:Event):void {
loadedSwf = MovieClip(loader.content);
trace(loadedSwf);
PS. I recommend using the Tweener library for tweening in
ActionScript. It is much better than the Adobe functions and there
is a tutorial at:
http://gotoandlearn.com/player.php?id=45