Hmm, clearly need to look more closely at my JBoss config. I just tried the same process definition on an old JBPM 3.2.2 install on Jboss 4.0.2. No exception is thrown but the timer action (i.e. the output message) still gets executed twice each time the superstate timer expires. I presume this is the wrong behaviour? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4257990#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...