Loading multiple external movie files


I have been working on this script that currently loads 2 external files into two separate areas inside my application. the 2nd file loaded is supposed to have several buttons that control the 1st movie clip. Like go to next frame, etc. My problem now is the 2nd file loaded, is not controlling the 1st anymore ( i had this all sitting in one file before).

So the action script to load the files is;

this.myBtn.onRelease = function() {
    //load render 1 into viewer
    this._parent.viewer.createEmptyMovieClip("clipHold", this.getNextHighestDepth());
    this._parent.imageName = "3600 RIO";
    //load panel swatches
    this._parent.panel.createEmptyMovieClip("clipPanel", this.getNextHighestDepth());

and in the Panel, are a series of buttons, which shold affect the render.swf. This code is;

//panel color swatches

this.one.onRelease = function() {
this.two.onRelease = function() {
this.three.onRelease = function() {

I have tried to point the panel colors to the main movie, but its still doesnt work. Any ideas?