Heeelp please!

i’m not new to flash…i know how to make mask layers…i’ve done it a thousand times. but now with flash mx…it just won’t work…everythig seems quite all right but when i export the movie there’s nothing…no mask, no masked layer…just black background!
help please
is this a bug!???

No bug. How do you do it ?

pom 0]
Check that post :
pub40.ezboard.com/fkirupa…=166.topic