Soundspectrum display disappears

Hey everyone, I am going to try and explain my issue as best as possible…

the SWF is located here:

http://upload.mocapoke.com/upload/nu-jeru23.swf

If youll notice, sometimes the soundspectrum display is visible and sometimes it is not. I cant figure out why this is happening. Could it be a level issue or something like that? I am just using “addChild” to add it to the stage.