Sorry, there was a slight mistake in the function I posted above. The process instance was not reloaded - as in your cvs tests. Here is the ammended version, which still has exactly the same outcome - error: @Test public void testSignal() { //JbpmConfiguration configuration = JbpmConfiguration.getInstance(); JbpmContext context = config.createJbpmContext(); try { File f = TestFiles.getFile("ProcessDefinition.xml"); ProcessDefinition def = ProcessDefinition.parseXmlReader(new FileReader(f)); context.getGraphSession().deployProcessDefinition(def); ProcessInstance p = new ProcessInstance(def); //******* save and reload process instance** context.save(p); context.close(); context = config.createJbpmContext(); context.loadProcessInstance(p.getId()); //****************************************** p.signal(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { context.close(); } } View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4120430#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...