[vvvvvvf]

super.stage не помагло
Вот более наглядно код

package {
	import flash.display.*;
 
	public class MyClass1 extends Sprite {
		public function MyClass1():void {
			addChild(new MyClass2());
		}
	}
}
package {
	import flash.display.*;
 
	public class MyClass2 extends Sprite {
		public function MyClass2():void {
			addChild(new MyClass3());
		}
	}
}
package {
	import flash.display.*;
	import flash.events.*;
 
	public class MyClass3 extends Sprite {
		public function MyClass3():void {
			stage.addEventListener(MouseEvent.MOUSE_UP, releaseHandle);
		}
		private function releaseHandle(event:MouseEvent):void {
			trace('MOUSE_UP');
		}
	}
}