Have you ever run into gotoAndPlay in AS2 not working? It's as if the playhead is stuck at the frame location that you go to. This bug has been around for quite some time, seems to be a problem with the Flash player. The way to get around this is by putting a play() in the frame that you want to go to to force it to play. I have not run into this issue with Flash 9/AS 3 yet.