@eljefe, If you look at the source code of WSHumanTaskHandler, the first thing it tries to do is to connect to the Mina Server (via Mina Client): public void executeWorkItem(WorkItem workItem, WorkItemManager manager) { Task task = new Task(); // other stuff } here is the connect method (within WSHumanTaskHandler): public void connect() { client = new MinaTaskClient( "org.drools.process.workitem.wsht.WSHumanTaskHandler", new TaskClientHandler(SystemEventListenerFactory.getSystemEventListener() ) ); } } "WSHumanTaskHandler" is tightly coupled with MinaServer to implement the WS-HumanTask standard (that defines a lifecycle of the Human Task), therefore, the only way to use out of the box "WSHumanTaskHandler", is to start the MinaServer: MinaTaskServer server = new MinaTaskServer(taskService); Thread thread = new Thread(server); thread.start(); Thread.sleep(500); You can read more about it in Drools Flow documentation, but it is a bit high level, so also take a look at the practical approach: http://www.packtpub.com/article/drools-jboss-rules-5.0-flow-part2 /Anatoly -- View this message in context: http://n3.nabble.com/Drools-Flow-Error-Question-tp689838p690119.html Sent from the Drools - User mailing list archive at Nabble.com.