AppWizard DialogEvent.OK not being fired on finish

I am building a wizard in my extension and I use the following code in the constructor to listen for the finish button.

public class My Wizard extends AppWizard {     public function MyWizard() {            super();                       //set size            UIComponent(this.container).minHeight = 400;            UIComponent(this.container).minWidth = 700;                       this.forwardButtonAlwaysEnabled = false;            this.addEventListener(DialogEvent.OK, onWizardCompleted, false, 0, true);     }            private function onWizardCompleted(event:Event):void {          // This is never triggered.     }
.....
}

For some reason, I have noticed that the DialogEvent.OK never gets fired after clicking finish. This is very strange as I have another wizard that works just fine. Also, I noticed that in other wizards, as soon as you click finish, the wizard closes, but, in this case, it just remains open. I cannot figure out why the wizard just stays open. Any help will be really appreciated, been working on this all week.

Thanks in advance.