Preloader with video template (screens)

Question

http://www.adobe.com/devnet/flash/articles/vidtemplate_corppreso.html
I am using this video template (above); it uses screens.
everything is working great. but i would like to add a preloader. I
have tried moving my keyframes to frame 10 to make room for a
preloader, but I keep getting a blinking screen when i test.
what is the correct way to do this? thank you.

Answer 1

most likely you have components (or other objects) that are
exported for actionscript and loaded before your preloader is
displayed.
to remedy, as pallav implied set export to some frame other
than 1 if you don't need to use any of those components etc in the
first frame.
however, that is not done in your library. click on file,
publish settings, flash, settings and change the export frame for
classes.