Problem with adding thumbnails

Hello with all,
Here, yesterday I was interested in the source to propose by Kirupa: “Adding Thumbnails”. Any walk very well, however I does not understand why the source does not function any more when I dynamically charge it on my swf principal (as: mcTarget.loadMovie (“galerie.swf”); Indeed if you test the clips “hittest” do not function correctly any more…

Why, I does not understand?

Thank you for your assistance…

caraffa.