Loading movie into another loaded movie not working

So…I’m making a sort of web page which contains about 4 different sections. I’ve got the main movie “Loader.swf” which is pulling in 4 different movies using the createmptyMovieClip method. I’ve given them their own Levels and movie clip names.

Now, I’m trying to get one standard “Pop Up” window that any of those pieces can launch. The “Pop Up” window will be on Level 10 so it will always be on top of everything and if you should click another “Pop Up” window on the menu, it SHOULD replace that “Pop Up” with the new content because it’s the same level.

Now, the problem I have is that in one of the sections movie, when I test it on it’s own, the “Pop Up” loads just fine. When I run the “Loader.swf” movie, nothing happens. So I’m thinking the reference is getting screwed up somewhere…or the Level is getting jacked…I’m not sure. Any ideas.

Loader.swf code:
ActionScript Code:
[LEFT][COLOR=#993300]this[/COLOR].[COLOR=#993300]createEmptyMovieClip[/COLOR][COLOR=#000000]([/COLOR][COLOR=#0000ff]“empty_mc3”[/COLOR], [COLOR=#000000]4[/COLOR][COLOR=#000000])[/COLOR];empty_mc3.[COLOR=#993300]loadMovie[/COLOR]COLOR=#000000[/COLOR];
[/LEFT]

CustEx_Announ.swf code: It’s got a tabbed menu, so I’m running a function on the root level that SHOULD get called when a button is pressed. So here’s the root level code:
stop();
ActionScript Code:
[LEFT][COLOR=#993300]function[/COLOR] LoadPopCOLOR=#000000[/COLOR] [COLOR=#000000]{[/COLOR] [COLOR=#993300]createEmptyMovieClip[/COLOR][COLOR=#000000]([/COLOR][COLOR=#0000ff]“empty_mc5”[/COLOR], [COLOR=#000000]10[/COLOR][COLOR=#000000])[/COLOR]; empty_mc5.[COLOR=#993300]loadMovie[/COLOR]COLOR=#000000[/COLOR]; [COLOR=#993300]trace[/COLOR][COLOR=#000000]([/COLOR][COLOR=#0000ff]“I got loaded”[/COLOR][COLOR=#000000])[/COLOR];[COLOR=#000000]}[/COLOR]
[/LEFT]

So…in that movie CustEx_Announc.swf, in the tabbed menu…there’s a button to launch the “Pop Up”:
ActionScript Code:
[LEFT]readMore.[COLOR=#993300]onRelease[/COLOR] = [COLOR=#993300]function[/COLOR]COLOR=#000000[/COLOR] [COLOR=#000000]{[/COLOR] [COLOR=#993300]_root[/COLOR].[COLOR=#000000]LoadPop[/COLOR]COLOR=#000000[/COLOR];[COLOR=#000000]}[/COLOR]
[/LEFT]

Any help is appreciated.