Thx. I was behind a proxy and it was'nt able to connect to http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd. I don't understand why it has to, but it is working by removing it or with direct internet connexion. Now I have different problems 1) jobexecutor import in my hibernate config seems to create the following error org.jbpm.api.JbpmException: no command executor available in job executor | at org.jbpm.pvm.internal.jobexecutor.JobExecutor.start(JobExecutor.java:78) | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) | at java.lang.reflect.Method.invoke(Unknown Source) | at org.jbpm.pvm.internal.util.ReflectUtil.invoke(ReflectUtil.java:267) | at org.jbpm.pvm.internal.wire.operation.InvokeOperation.apply(InvokeOperation.java:39) | at org.jbpm.pvm.internal.wire.descriptor.ObjectDescriptor.initialize(ObjectDescriptor.java:229) | at org.jbpm.pvm.internal.wire.WireContext.performInitialization(WireContext.java:537) | at org.jbpm.pvm.internal.wire.WireContext.processPendingInitializations(WireContext.java:568) | at org.jbpm.pvm.internal.wire.WireContext.create(WireContext.java:454) | at org.jbpm.pvm.internal.wire.WireContext.create(WireContext.java:441) | at org.jbpm.pvm.internal.wire.WireContext.get(WireContext.java:421) | at org.jbpm.pvm.internal.wire.WireContext.initializeEagerObjects(WireContext.java:287) | at org.jbpm.pvm.internal.wire.WireContext.create(WireContext.java:272) | at org.jbpm.pvm.internal.cfg.JbpmConfiguration.buildProcessEngine(JbpmConfiguration.java:132) | at javaclass.DAO.BillDAO.findByExample(BillDAO.java:41) | at javaclass.action.ListBillAction.execute(ListBillAction.java:29) | at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58) | at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67) | at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51) | at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191) | at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305) | at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191) | at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283) | at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) | at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) | at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) | at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) | at java.lang.Thread.run(Unknown Source) But as I don't use it I deleted the line (I think there is a problem behind it but I could't find it) 2) Now i'm getting a new error on : ProcessInstance processinstance = executionService.startProcessInstanceByKey("taskformExample"); | java.lang.NullPointerException | at org.jbpm.pvm.internal.svc.ExecutionServiceImpl.startProcessInstanceByKey(ExecutionServiceImpl.java:66) | at javaclass.DAO.BillDAO.findByExample(BillDAO.java:45) | at javaclass.action.ListBillAction.execute(ListBillAction.java:29) | at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58) | at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67) | at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51) | at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191) | at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305) | at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191) | at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283) | at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) | at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) | at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) | at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) | at java.lang.Thread.run(Unknown Source) taskformExample appear in the console and seems to be good. stack variables : processEngine JbpmConfiguration (id=77) | authenticatedUserIdThreadLocal ThreadLocal<T> (id=481) | impl null | isConfigured true | processEngineWireContext WireContext (id=484) | transactionWireDefinition WireDefinition (id=489) | userCommandService null | userProvidedEnvironmentObjectsThreadLocal ThreadLocal<T> (id=492) executionService ExecutionServiceImpl (id=80) | commandService null I think the problem come from commandService that is null, but I don't know why. I didn't change the other files. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4253691#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...