What does this error message mean?

Music is supposed to play in my game, but it doesn't. However, if I put a breakpoint on the action that plays the music, the music DOES play when I click 'continue', but I get this popup and the game freezes. What does it mean? What's going on?

Stack issues are usually infinite loops. What do your events look like?

Stack issues are usually infinite loops. What do your events look like?

No loops.

01aLoop1 and 01aLoop2 are the broken ones. Like I said, they only play when I put a breakpoint on the action, and that brings up the stack overflow error.

BUT the music works perfectly when I preview the layout by itself. When I go to the layout from a different layout, the music breaks.

I renamed the sound files to "Britney" and "Spears" and triggered them using a function rather than as a part of the sequence of actions. On of those two things has fixed the problem apparently.

uh