How would you remove SWF's?

So I have a problem occurring when I try the addChild/removeChild method. Maybe, I am doing something wrong, but my question is that when you click on a gallery page and its time to load the SWF... it loads fine, but when its time to remove the SWF that is where the problem is occurring. I don't get any errors when I output the movie, but when I click links, the following problem persists:

TypeError: Error #2007: Parameter child must be non-null.
      at flash.display::DisplayObjectContainer/removeChild()
      at nali_Project_3_Portfolio_fla::MainTimeline/frame10()
      at flash.display::MovieClip/gotoAndStop()
      at nali_Project_3_Portfolio_fla::intro_mc_1/frame108()

What seems to be the problem here? My code is as follows:
var requestMov:URLRequest = new URLRequest("gallery.swf");
var loaderMov:Loader = new Loader();
addChild(loaderObj);
loaderMov.load(requestMov);

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and to remove it is removeChild(loaderObj).
beginnersdevelopmentAsked:
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beginnersdevelopmentAuthor Commented:
Needs attention quick!
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GarrettChristophersonCommented:
change addchild(loaderObj) to addchlid(loaderMov)
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beginnersdevelopmentAuthor Commented:
fixed, but not working still.

var requestMov:URLRequest = new URLRequest("gallery.swf");
var loaderMov:Loader = new Loader();
addChild(loaderMov);
loaderMov.load(requestMov);

Open in new window


and to remove: removeChild(loaderMov).

Still get an error. Whats the problem or is there another way of removing and adding swf's?
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GarrettChristophersonCommented:
what error are you getting?
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beginnersdevelopmentAuthor Commented:
I am getting a lot of type errors when I test the movie out, but when I don't link my SWF's than I am good to go. My question turns around to be... What is the AS 3.0 code for adding and removing a swf file? I have researched this, but no solutions seem to work for me? Here is a preview of what I am doing: I am putting two galleries (gallery.swf and gallertwo.swf) in to a flash website. The code that I am using to put the SWF on my website is

var gallery:Loader = new Loader();
gallery.load(new URLRequest("nali_Project_3_gallery.swf"));
addChild(gallery);

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and to remove it is

removeChild(gallery);

Open in new window


I use the same code with different function name for gallerytwo, but no luck and just errors like "TypeError: Error #2007: Parameter child must be non-null.
ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller."

gallerytwo doesn't get removed successfully either, but the other gallery does.

What am I doing wrong and what is the right script to do this? Am I adding the code to each button or what? I am bumping this up to 500 points, so someone please quickly help me.
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beginnersdevelopmentAuthor Commented:
I commented out the
removeChild

Open in new window

code and it seems to work without any errors, so the problem has to be that or that I am not putting the wrong code.  If I don't put this piece of code to remove SWF than my SWF's sit on top of the other pages. What am I doing wrong, somebody?
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GarrettChristophersonCommented:
This is just a hunch:  I believe that your problem is scope, or when removeChild functions are called on the timeline. Along the lines of when removeChild is called on the timeline, try this:

var gallery:Loader = new Loader();
gallery.name = "gallery";
gallery.load(new URLRequest("nali_Project_3_gallery.swf"));
addChild(gallery);

and then just before you remove it from the stage, call

trace(gallery.name + " = gallery.name");  

do that for both of your loader objects, if you get an error with the trace(), try to find the place that the trace will report/print the name.  

as far as the #2025, this has to do with scope.

scope works likes this:

var mc:MovieClip = new MovieClip();
var gallery:Loader = new Loader();
gallery.load(new URLRequest("nali_Project_3_gallery.swf"));
mc.addChild(gallery); //this command makes gallery a child of mc

if you try: removeChild(gallery);  // it should throw a #2025 exception because you need to associate the relationship (parent & child).

where as mc.removeChild(gallery); //should remove gallery from the stage.

hope that helps
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beginnersdevelopmentAuthor Commented:
I got the solution, but noone on here helped as much as I would like. Thanks everyone for the help and I rewarded the points to the best solution I got.
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beginnersdevelopmentAuthor Commented:
I found the answer at another EE. I love this  site.
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