cheplv wrote Next fiew steps required (this not takes long time) http://orbeon.uservoice.com/pages/27-general/suggestions/201360-jboss5-orbeon-installation------------------------------- Installation on JBOSS5 as extracted WAR deployment failed, this cause remaked eXist db. Solution is that you need to remove "org/xml/sax/" from exist-xmlrpc-1_2-patched.jar P.S. Orbeon must to remake this.