I stumbled into the same problem (and some others) while trying to upgrade. Does this mean that when upgrading to the 3.3 version of jbpm, all process definition with joins need to be changed (lockmode upgrade needs to be added). By default lockmode seems to be 'force' which gives problems with versioned items... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4200108#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...