Inexplicable component behavior - dynamic text field

I'm building a Flash mp3 player application which can be found at http://www.delvarworld.com/music/ . The problem being that occasionally the list of songs (a dynamic text field) will be replaced with the text "_level0.song_list." That's the location+name of the dynamic text field itself. I have no idea what's causing it. There's nothing in the code that could be doing this. I wish I could pinpoint when it happens, but it seems to be random. If you toy around with changing categories / songs / pressing random buttons sometimes the text will turn to level0. I'm hoping someone has seen this kind of behavior before and has an idea of what's causing it.