I got this problem, and i don't remember how to fix it. I do
remember that in AS3.0 you can set the property of a movie clip to
mouseChildren = false to get it working.
This is wat is going on.
Suppose you have an movieclip with an instance name :
And inside this movie clip you have 2 frames with also a
movieclip with an instance name of sub_mc.
To see the difference you can copy this sub_mc and copy it on
the second frame with another color tint.