I want to deploy an ear file which uses its own (old ~1.4) version of xercesimpl. However when I use classloader isolation for my ear file the deployment fails. It seems as though jboss uses the ear file's xercesimpl during deployment. How can I deploy my ear file in such a way that my version of xercesimpl is only used from within my application? I use jboss-5.1.0.CR1 View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4230560#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...