Flash CS5 Syntax Issue

Question

I've got an actionscript 3 project which I created in Flash CS4, I just tried publishing it in CS5, it converted the save to CS5 and is now complaining about incorrect syntax at places that make no sense such as:

Scene=Scene 1, layer=Layer 1, frame=1, Line 12 '{' expected

Line 12 is:

function songinfoLoaded(event:Event):void {