This was resolved by moving jfreechart.jar and jcommon.jar out of WEB-INF/lib and into jboss/server/<server-name>/lib. This perhaps explains some of the strangeness in the documentation on activating PDF support. The instructions make the assumption that jfreechart and jcommon are available on the path independent from the application. I don't know if it's necessary to update the JIRA documentation fix entry http://jira.jboss.org/jira/browse/JBSEAM-2372 to specify this. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4113092#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...