Printing problem

Hi there,
wonder if anyone can help me here. I’m having an issue with printAsBitmap.
Its set to print a mc that sits off screen with dynamically generated text within. This all works perfectly when i test the movie within flash, it prints perfect. However, when i publish the swf it stops working, instead it prints the corner of the offscreen content. Anyone have a clue why this is occurring? Any help would be greatly appreciated,