Loading swf's errors

programming flash
1

Im making a main page that will load different content into one loader. I have the loading URLRequest calling a variable for the link and then on a certain button click it will change the swf to be loading. The problem is this:
This code is being called in a movieclip inside the main timeline called “loaderHolder”
[AS]
//I have all the variables initiated above these functions
function startLoad()
{
trace(“Started”);
mRequest = new URLRequest(MovieClip(root).loadContent);
trace(MovieClip(root).loadContent);
mLoader.load(mRequest);
}// end function

function onProgressHandler(mProgress:ProgressEvent)
{
var percent:Number = Math.round((mProgress.bytesLoaded / mProgress.bytesTotal)*100);
load_txt.text = percent + “%”;
load_txt.setTextFormat(LF_txt);
}// end function

function onCompleteHandler(loadEvent:Event)
{
loadContent_mc.addChild(loadEvent.currentTarget.content);
removeChildAt(2);
removeChildAt(1);
}// end function
[/AS]

This is on the main timeline. These functions trigger a tween that will drop then comeback (yoyo) with new content to load.

[AS]
//Tween/Start Loader
// Working to get tween to run then pop back with new content
var loadLoaderTween:Tween = new Tween(loaderHolder, “y”, Strong.easeInOut, 1191.0, stage.stageHeight/2, 2, true);
loadLoaderTween.addEventListener(TweenEvent.MOTION_STOP, startLoading);
//This initiates the very first load
function startLoading(e:TweenEvent) {
this.loaderHolder.startLoad();
}

//Unload Current - Triggers on a button click
function unLoad() {
loadLoaderTween = new Tween(loaderHolder, “y”, Strong.easeInOut, loaderHolder.y, 1191.0, 2, true);
loadLoaderTween.addEventListener(TweenEvent.MOTION_STOP, startNewLoad);
this.loaderHolder.mLoader.close();
}
function startNewLoad(e:TweenEvent) {
loadLoaderTween.removeEventListener(TweenEvent.MOTION_STOP, startNewLoad);
loadLoaderTween.yoyo();
trace(“Works”);
loadContent = “/flash/test2.swf”;
this.loaderHolder.startLoad();
}
[/AS]

I get these errors:


Error: Error #2029: This URLStream object does not have a stream opened.
	at flash.display::Loader/close()
	at csteelmedia_fla::MainTimeline/unLoad()
	at csteelmedia_fla::btn_web_8/clicked()



//This one happens at this point: mLoader.load(mRequest);
ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
	at flash.display::Loader/_load()
	at flash.display::Loader/load()
	at csteelmedia_fla::mc_loaderHolder_1/startLoad()
	at csteelmedia_fla::MainTimeline/startNewLoad()
	at flash.events::EventDispatcher/dispatchEventFunction()
	at flash.events::EventDispatcher/dispatchEvent()
	at fl.transitions::Tween/stop()
	at fl.transitions::Tween/set time()
	at fl.transitions::Tween/nextFrame()
	at fl.transitions::Tween/onEnterFrame()