I need to create a FLVPlayback component dynamically, but it
seems I can't cast the MovieClip returned by attachMovie to
FLVPlayback class, it always return null. If I create a new
document, it works well. I think this problem happen when I tell
Flash to export classes at frame 2, but my component is being
attached at frame 3. Is there a way to export classes for frame 2
and still being able to cast the Component?