ActionScript3 remove child error - actionscript-3

Question

I recently have been converting an as2 fla to as3 (new to AS3) and have the entire thing working on export, but I am getting an error when I try to remove previously loaded swf's before a new swf is loaded
ArgumentError: Error #2025: The supplied DisplayObject
must be a child of the caller.
at flash.display::DisplayObjectContainer/removeChild()
at MethodInfo-11()
I know the error relates to my removeChild code here:
`stage.addEventListener(MouseEvent.CLICK, removeSWF);
function removeSWF (e:MouseEvent):void
{
if(vBox.numChildren !=0){
// swfLoader.unloadAndStop();
vBox.removeChild(swfLoader);// empty the movieClip memory
}
}`
However, I cannot seem to find a suitable rewrite for this code that will work and not have an error. This code IS working, so I'm not sure if it would be worth my time to fix this error, or just leave it. I've already messed with it for a couple days, so at this point it's just frustrating me that I cannot fix it.
The stage mouse click listener is useful in this case because I have a back button not shown in this code that clears the loaded swf's before moving to another scene.
Does anyone see a simple solution for this, or do you think it is unnecessary to pursue since the code does what I require?
ENTIRE CODE:
function launchSWF(vBox, vFile):void {
var swfLoader:Loader = new Loader();
var swfURL:URLRequest = new URLRequest(vFile);
swfLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgressHandler);
swfLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadProdComplete);
swfLoader.load(swfURL);
function loadProdComplete(e:Event):void {
trace("swf file loaded");
vBox.removeChild(preLoader);
vBox.addChild(swfLoader);
currentSWF = MovieClip(swfLoader.content);
currentSWF.gotoAndPlay(1);
currentSWF.addEventListener(Event.ENTER_FRAME , checkLastFrame);
swfLoader.x = 165;
swfLoader.y = 15;
function checkLastFrame(e:Event):void {
if (currentSWF.currentFrame == currentSWF.totalFrames) {
currentSWF.stop();
// trace("DONE");
}
}
}
var preLoader:loader = new loader();
preLoader.x = 450;
preLoader.y = 280;
vBox.addChild(preLoader);
function onProgressHandler(event:ProgressEvent){
var dataAmountLoaded:Number=event.bytesLoaded/event.bytesTotal*100;
//preLoader.bar.scaleX = dataAmountLoaded/100;
preLoader.lpc.text= int(dataAmountLoaded)+"%";
//trace(preLoader.bar.scaleX );
}
//NEW ERRORS BUT WORKING
stage.addEventListener(MouseEvent.CLICK, removeSWF);
function removeSWF (e:MouseEvent):void
{
if(vBox.numChildren !=0){
// swfLoader.unloadAndStop();
vBox.removeChild(swfLoader);// empty the movieClip memory
}
}
}
var container:MovieClip = new MovieClip();
var currentSWF:MovieClip = new MovieClip();
fall_b.addEventListener(MouseEvent.CLICK, fall_bClick);
function fall_bClick(e:MouseEvent):void {
var swfFile:String = 'load/fall.swf';
launchSWF(container, swfFile);
addChild(container);
}
face_b.addEventListener(MouseEvent.CLICK, face_bClick);
function face_bClick(e:MouseEvent):void {
var swfFile:String = 'load/face.swf';
launchSWF(container, swfFile);
addChild(container);
}
rott_b.addEventListener(MouseEvent.CLICK, rott_bClick);
function rott_bClick(e:MouseEvent):void {
var swfFile:String = 'load/rottgut.swf';
launchSWF(container, swfFile);
addChild(container);
}
//MORE SWFS...
Any advice anyone has is appreciated

Answer 1

First of all function launchSWF(vBox, vFile):void { isn't closed. You've also got function inside functions which is easy enough for you to solve if you click the lines the curly brackets start and end on to track them.
I can't see anything wrong with the code you said has an error but I'm guessing this isn't all the code. If you using Flash Professisonal you can use permit debugging to show the line the error is on.
EDIT: Please note this hasn't been tested as I'm on my mobile writing out code. That being said this should now work:
var container:MovieClip;
var currentSWF:MovieClip;
var swfFile:String;
var swfLoader:Loader;
var preLoader:Loader;
var swfURL:URLRequest;
init();
function init():void {
preLoader = new Loader();
preLoader.x = 450;
preLoader.y = 280;
vBox.addChild(preLoader);
container = new MovieClip();
currentSWF = new MovieClip();
fall_b.addEventListener(MouseEvent.CLICK, fall_bClick);
face_b.addEventListener(MouseEvent.CLICK, face_bClick);
rott_b.addEventListener(MouseEvent.CLICK, rott_bClick);
stage.addEventListener(MouseEvent.CLICK, removeSWF);
}
function launchSWF(vBox, vFile):void {
swfLoader = new Loader();
swfURL = new URLRequest(vFile);
swfLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgressHandler);
swfLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadProdComplete);
swfLoader.load(swfURL);
}
function loadProdComplete(e:Event):void {
trace("swf file loaded");
vBox.removeChild(preLoader);
vBox.addChild(swfLoader);
currentSWF = MovieClip(swfLoader.content);
currentSWF.gotoAndPlay(1);
currentSWF.addEventListener(Event.ENTER_FRAME , checkLastFrame);
swfLoader.x = 165;
swfLoader.y = 15;
}
function checkLastFrame(e:Event):void {
if (currentSWF.currentFrame == currentSWF.totalFrames) {
currentSWF.stop();
// trace("DONE");
}
}
function onProgressHandler(event:ProgressEvent) {
var dataAmountLoaded:Number = (event.bytesLoaded / event.bytesTotal * 100);
//preLoader.bar.scaleX = dataAmountLoaded/100;
preLoader.lpc.text = int(dataAmountLoaded)+"%";
//trace(preLoader.bar.scaleX );
}
function removeSWF (e:MouseEvent):void {
if(vBox.numChildren !=0){
//swfLoader.unloadAndStop();
vBox.removeChild(swfLoader);// empty the movieClip memory
}
}
function fall_bClick(e:MouseEvent):void {
swfFile = 'load/fall.swf';
launchSWF(container, swfFile);
addChild(container);
}
function face_bClick(e:MouseEvent):void {
swfFile = 'load/face.swf';
launchSWF(container, swfFile);
addChild(container);
}
function rott_bClick(e:MouseEvent):void {
swfFile = 'load/rottgut.swf';
launchSWF(container, swfFile);
addChild(container);
}

Answer 2

I have this rewritten. I could not get the vBox errors cleared in the original code, and I was getting many other errors with what was posted. The vBox code was seen on a tutorial. I think it was supposed to reference the loader for the preloader and the swf, and vFile was for the actual .swf. The following code preloads multiple swfs and clears them with no errors. I appreciate your help AntBirch. I'm beginning to understand loaders in as3 a little more now.
//LOAD FIRST PIECE ON OPEN (required to removeChild later)
var swfLoader:Loader = new Loader();
var defaultSWF:URLRequest = new URLRequest("load/fall.swf");
swfLoader.load(defaultSWF);
swfLoader.x = 165;
swfLoader.y = 15;
addChild(swfLoader);
//PRELOADER
var preLoader:loader = new loader();
preLoader.x = 450;
preLoader.y = 280;
function loadProdComplete(e:Event):void {
trace("swf file loaded");
removeChild(preLoader);
addChild(swfLoader);
}
function onProgressHandler(event:ProgressEvent){
var dataAmountLoaded:Number=event.bytesLoaded/event.bytesTotal*100;
preLoader.lpc.text= int(dataAmountLoaded)+"%";
}
//BUTTONS
function btnClick(event:MouseEvent):void {
swfLoader.unloadAndStop();
removeChild(swfLoader);
swfLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgressHandler);
swfLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadProdComplete);
addChild(preLoader);
var newSWFRequest:URLRequest = new URLRequest("load/" + event.target.name + ".swf");
swfLoader.load(newSWFRequest);
swfLoader.x = 165;
swfLoader.y = 15;;
addChild(swfLoader);
}
// BUTTON LISTENERS
fall.addEventListener(MouseEvent.CLICK, btnClick);
face.addEventListener(MouseEvent.CLICK, btnClick);
rott.addEventListener(MouseEvent.CLICK, btnClick);
angel.addEventListener(MouseEvent.CLICK, btnClick);
ratts.addEventListener(MouseEvent.CLICK, btnClick);
metal.addEventListener(MouseEvent.CLICK, btnClick);
//etc...
//BACK BUTTON
BB3.addEventListener(MouseEvent.CLICK, BB3Click);
function BB3Click(e:MouseEvent):void {
swfLoader.unloadAndStop();
removeChild(swfLoader);
this.gotoAndPlay(1 ,"Scene 2")
}