Loader and dispatching events

I have an application that runs some stuff in the foreground (1), and loads a swf in the background(2) . When (1) is finished it fires off an event.

Everything works fine in the Flash IDE. However, when I publish, and view in my browser, the event doesn’t fire. Does this have anything to do with applicationDomain, childAllowsParent, parentAllowsChild … etc, from the LoaderInfo class? I’m sorta stuck right now … don’t like when everything works fine in Flash, but outside … blehh.