title: Could not find compiled resource bundle 'messaging' for locale 'en_US'. while migrating from 4.0 to 4.6
body: <p>When migrate flex SDK from 4.0 to 4.6. I meet such an error in runtime.</p>
  
  <pre><code> Error: Could not find compiled resource bundle 'messaging' for locale 'en_US'.
   at mx.resources::ResourceManagerImpl/installCompiledResourceBundle()
   at mx.resources::ResourceManagerImpl/installCompiledResourceBundles()
   at mx.core::FlexModuleFactory/installCompiledResourceBundles()
   at mx.core::FlexModuleFactory/docFrameHandler()
   at mx.core::FlexModuleFactory/docFrameListener()
  </code></pre>
  
  <p><p>The resouce bundle 'mesaging' is included in rpc, and 'rpc' has been loaded to 'caching' while open my app. I found some workround on net, but none does work. I tried:</p>
  
  <pre><code>1.add [ ResourceBundle( "messaging" )]
  2.decalare a usage to class that maybe use the 'mesaging', such as
   import mx.messaging.channels.HTTPChannel;
   private var httpChannel:HTTPChannel;&lt;/pre&gt;
  3.In pom
      &lt;includeResourceBundles&gt;
      &lt;bundle&gt;messaging&lt;/bundle&gt;
      &lt;/includeResourceBundles&gt;
  </code></pre>
  
  <p>Anybody has other solution about the problem? Thanks</p>