I've completely removed JBoss AS, SEAM, JBoss Tools, etc.. etc.. and performed a clean install. Whatever was causing that issue disappeared. I've new configured Ajax, XDocs, and Seam (2.0.1.GA) home. I create a new new project using the wizard, selecting "Seam 2.0 technology preview". When I publish I get: "ERROR [MainDeployer] Could not initialise deployment: file:/Developer/Java/jboss-4.2.2.GA/server/default/deploy/HelloWorld-ear.ear/ org.jboss.deployment.DeploymentException: url file:/Developer/Java/jboss-4.2.2.GA/server/default/deploy/HelloWorld-ear.ear/jboss-seam.jar" After manually copying the required JARs to the deployment directory (which is a problem?) I get: "ERROR [[/HelloWorld]] Exception sending context initialized event to listener instance of class org.jboss.web.jsf.integration.config.JBossJSFConfigureListener java.lang.ExceptionInInitializerError" View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4148977#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...