Loading images sprite

when I pass a sprite variable to a class to place images in it the spite doesnt display all the image as it should. It is unstable.
[CODE]
canvas1=new Sprite();
addChild(canvas1);
mybackground=new ClassBackGroundtile(canvas1);
canvas1.addChild(mybackground);
classbackgroundTile
private var canvas1:Sprite;
public function ClassBackGroundTile(ccanvas1:Sprite...) {
canvas1=ccanvas1;
//addChild(img1);
canvas1.addChild(img1); //this causes the problem
[/CODE]
the problem

jag,
You're probably going to have to post more of your code to get any help.  There's nothing specificly wrong with what you are doing there.  But, when objects I add to the stage don't seem to be appearing here are some things to check for:
The x,y position of the sprite - Was it added, but just off of the stage somewhere.
Are you setting the visibility property of these sprites to false anywhere.
Are newer sprites covering up older sprites? Again - check x,y, coords.
To see if your objects are really being added- after adding them, print out the PARENT_SPRITE.numChildren property and see if it matches how many children should have been added.
Write back with more details about the problem and someone will help you out.

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