MC disappears when using Kirupas photogallery

Hi everybody,
I have tried to use the tutorial “Create a photogallery” here on Kirupas.
http://www.kirupa.com/developer/mx/photogallery.htm

My problem is, I am putting the whole thing (actions and clip) on a MC, not in _root. When I publish it the rest of that mc disappears!

I have checked the paths and I am pretty sure they are OK. The first picture of the photogallery also loads in fine but the rest disappears. I have also tried making the photogallery in a different document in _root and it works fine. I have also checked that I haven’t accidentally masked something.

Does anybody know anything about this???