tell target alternative

IF you have your file set up correctly, then you target it like this:

clipA.clipB.addEventListener(MouseEvent.CLICK, changeFrame);

function changeFrame(evt:MouseEvent):void{
clipA.gotoAndStop(1);
}

sorry. but liike i said...... IF your file is set up correctly, that will work.

i assumed you have a main timeline, with a movieclip "A" ( you'll have to call it whateer you want, and change the insance name in the code) that has its own timeline. inside movieclip A is movieclip B.

if so, then yoiu are calling the button/movieclip B by its patway: movieclipA.movieclipB and you are telling movieclip A to goto and Play from its frame one :
movieclipA.gotoAndPlay(1) is the way to do it.

i did fully test it out .....

your error statement says that either you have things named differently, or your code is misplaced - all code should be on the first frame of the main timeline and not inside any movieclip.

i would have no idea what "..Symbol=INFOMERCIALS, layer=VI Statement.." is

however, the full code on the first frame of the main timeline would look something like this:
stop();

mc1_mc.stop();

mc1_mc.mc2_mc.addEventListener(MouseEvent.CLICK, changeFrame);

function changeFrame(evt:MouseEvent):void{
mc1_mc.gotoAndStop(1);
}

hope that makes sense and helps.