User development, A new message was posted in the thread "jbpm 4: Can't complete task in HSQLDB and DERBY": http://community.jboss.org/message/521822#521822 Author : Ronald van Kuijk Profile : http://community.jboss.org/people/kukeltje Message: -------------------------------------------------------------- Ok, it seems that with the introduction of the id generator these scripts were not updated. Please file a jira issue for it.   Letting hibernate do the 'upgrade' might work. -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/521822#521822