I have a similar situation. I am attempting to deploy a second instance of my application in order to test a build from a branch and having class loading issues. The first instance deployed works fine but the second gets a ClassCastException. The application is deployed as an ear and I have tried following the class loading documentation to set the loader-repository and Java2ParentDelegation in my jboss-app.xml but the problem persists. Is it possible to run two instances of the same application? I'm assuming yes, but so far I can't figure it out. Anyone have any suggestions? Thanks in advance, Greg Stacey View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4152564#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...