I'm also using ehcache-1.2.jar instead of ehcache-1.1.jar that comes bundled with the jbpm starter kit View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3961956#3961956 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3961956