The AbstractWarDeployment code is a port of old 4.x code to the new deployment framework. When this was done, the unit class loader was supposed to be the class loader as configured by the class loading deployers. What is the difference between the unit class loader and the class loader for the JBossContextConfig class? These both should be the war class loader. I'll take a look at the nexj-web.war rodos77 posted to see what the conflicting class loaders are. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4251337#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...