Paulus: Here is my application tag;
<mx:WindowedApplication layout="absolute" xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:ext="Classes.panel.*" creationComplete="initApp();" xmlns:utils="Classes.Components.utils.*" pageTitle="ACETAS" xmlns:vti="Classes.Input.*" modalTransparency=".2" modalTransparencyBlur="2" width="1280" height="720" scriptTimeLimit="60"> Paul R. Stearns Advanced Consulting Enterprises, Inc. 15280 NW 79th Ct. Suite 250 Miami Lakes, Fl 33016 Voice: (305)623-0360 x107 Fax: (305)623-4588 ---------------------------------------- From: "Paulus de B." <w.p.stuur...@knollenstein.com> Sent: 6/25/20 5:48 PM To: users@flex.apache.org Subject: Re: AIR Versions Hi Paul, MX components should normally not be a problem. Are you sure you have the mx namespace defined? Like this e.g. in a spark VGroup that uses mx components (the xmlns:mx part): <?xml version="1.0" encoding="utf-8"?> <s:VGroup xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" Cheers Paulus -- Sent from: http://apache-flex-users.2333346.n4.nabble.com/