Problem with button that loads a mc

Hi everybody… I am having a small problem with my flash site: I have I button that I use in order to go to a specific frame and then load a mc. However, the button will not be on stage at the frame where the mc is loaded. The result is that the button takes me to the right frame, but fails to load the mc. Right now the button is inside an external mc so the code I am using is:

on (release){

The mc that contains the button is on frame 14. However the button is not on stage on frame 13. When I copied it on frame 13 it was working. Any idea about how I can make the button work without having it on frame 13? (i can’t have the loading action on the mc, because there are several movies that are loading on the same mc…)
I hope that it makes some sense… Thanks…