Appfuse Access denied error

Hi all,
Am quite new to appfuse and still trying to understand the various layers.

While testing the default struts2 maven archetype I faced a peculiar problem - if i access an admin protected page like - http://localhost:9090/admin/editUser.html?id=1 - i get a nested access denied error page. I understand that the actual url should be http://localhost:9090/editUser.html?id=1, but was just curious to know what caused an access denied page to be nested inside another one, if i try using the wrong url

Regards,
Chris