Button loop breaks rollover

I've got a Next button with a rollover that works fine. However, when the user reaches the end of the page, the button needs to flash to let the user know they need to click it.

I set this up the way I would have in AS2, with an up state in frame 1, rollover state in frame 2 and frame 3-10 has the animation for the flashing state. In AS3, as soon as I put the animation in, the rollover no longer works and I think it's tied to my animation layer since it works if I remove that layer. I tried putting the layer under my normal button layer, thinking it's not recognizing the animation as part of the button. I tried using classic tweens and the new tweens and nothing seems to work...

Any ideas?? I attached the file. You can see that the rollovers work, if you click the pause button, it triggers the flashing animation and then, I get the following error if I try rolling over:

TypeError: Error #1010: A term is undefined and has no properties.
at buttonRO_fla::MainTimeline/BtnIn()

and tracing the target name no longer shows the button name (as it does before you do the flash)...

Ideas??

TIA!

Nevermind...I got it...just had to add:

btnNext_mc.mouseChildren = false;

Thanks!!

:)