There was a change in the classloaders from Unified Classloader to VFS Classloader. What it basically means is that resources are detected in a strict spec compliant way. For an ear, if you have a war underneath the resource(xml file) can be under WEB-INF/classes. If not, you can have ear/lib/somejar/xyz.xml or you will need to use the manifest to define classpath entries. For an ear, the classpath will not include the root of the ear. Hence META-INF/xyz.xml will not be detected. ear->lib, ear->war->WEB-INF/classes are on the classpath. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4134735#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...