Are you packaging the quartz-1.6.0 jar along with your application? Does it work if you don't include that? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4146115#4146115 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4146115