[flexcoders] Gumbo - new namespaces - error

[Mic]

Assuming that the latest namespace changes point to this standard:

?xml version="1.0" encoding="utf-8"?>
<s:Application name="GumboApp"
        xmlns:fx="http://ns.adobe.com/mxml/2009";
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/halo">

<mx:Script>
   <![CDATA[
       //ActionScript statements
   ]]>
 </mx:Script>

Why does <mx:Script> give a

Could not resolve <mx:Script> to a component implementation?

 What does work in the way of code completion does pop up <mx:Script>, and 
Gumbo Lang Refs still lists <mx:Script>. TIA,

Mic.