I am really frustrated with Flash right now. All I have to do is mask one layer and it doesn't work.

I have two different layers that have a graphic that flies in from the left side of the stage. When I put a mask over the first one it works perfect. When I put a mask over the second one it looks like it works perfect but when I test it, it doesn't. It never shows up.

Do you have any ideas???

Thanks for any help!