title: how to make a "MVC Application" with extjs 4.0 beta 3?
body: <p>Is there someone here who made a MVC application using EXTJS 4 BETA 3? and works fine??
  please help me how?, ..</p>
  
  <p>I have followed step by step <a href="http://dev.sencha.com/deploy/ext-4.0-beta3/docs/guide/application_architecture.html" rel="nofollow">here</a> .. and @Abdel Olakara help</p>
  
  <p>but there is still an error ... here my firebug</p>
  
  <pre><code>[Ext.Loader] Synchronously loading 'AM.controller.Users'; consider adding  
  Ext.require('AM.controller.Users') above Ext.onReady  
  
  [Ext.Loader] Synchronously loading 'AM.store.Users'; consider adding  
  Ext.require('AM.store.Users') above Ext.onReady
  
  this.getView('Viewport') is null
  </code></pre>
  
  <p>When i read <a href="http://www.sencha.com/forum/showthread.php?130257-Beta3-API-Doc-Issues&amp;p=591772&amp;viewfull=1#post591772" rel="nofollow">this</a> at the forum ... there are still some bug with MVC guide ...</p>
  
  <p>so, if you ever make it works.. how?  </p>
  
  <p>this is my <code>Application.js</code> : </p>
  
  <pre><code>Ext.Loader.setConfig({enabled:true}); 
  Ext.create('Ext.app.Application', {
      name: 'AM',
  
      controllers: [
          'Users'
      ],
  
      views: [
          'user.List'
      ],
  
      launch: function() {
          Ext.create('Ext.container.Viewport', {
              layout: 'fit',
              items: {
                  xtype: 'userlist'
              }
          });
      }
  });
  </code></pre>
  
  <p>i'm trying to learn MVC in Extjs...
  sorry if my english bad..</p>