Am new to GXT so still finding my way around a little.

Have got a simple webapp running with Netbeans and Tomcat. I would really like to get the DesktopApp example running so copied over the source and updated the various xml files.

When I run a build, I get the following error:

GWT Compiling client-side code.
Compiling module com.sencha.gxt.desktopapp.DesktopApp
   Finding entry point classes
      [ERROR] Unable to find type 'com.sencha.gxt.desktopapp.client.DesktopApp'
         [ERROR] Hint: Check that the type name 'com.sencha.gxt.desktopapp.client.DesktopApp' is really what you meant
         [ERROR] Hint: Check that your classpath includes all required source roots
Exception in thread "UnitWriteThread" Z:\Development\M\nbproject\build-gwt.xml:134: The following error occurred while executing this line:
Z:\Development\M\nbproject\build-gwt.xml:232: Java returned: 1
BUILD FAILED (total time: 17 seconds)
I have checked that the com.sencha.gxt.desktopapp.client.DesktopApp class is available within the source tree.