anonymous wrote : Caused by: java.lang.ClassCastException: org.apache.xerces.parsers.XML11Configuration cannot be cast to Are you packaging any jar files containing org.apache.xerces.* classes, in your application? If yes then remove those jars from the application packaging. JBoss already ships with those jars. While posting logs or xml content or code, please remember to wrap it in a code block by using the Code button in the message editor window. Please use the Preview button to ensure that your post is correctly formatted. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4211754#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...