Hi again, after some tests i discovered the true reason of the problem, but not a solution for it. If anybody know why it happens, tell me please: | Exception in thread "JbpmCommandExecutor" java.lang.NoClassDefFoundError: org/hibernate/Session | at org.jbpm.persistence.db.DbPersistenceServiceFactory.openService(DbPersistenceServiceFactory.java:55) | at org.jbpm.svc.Services.getService(Services.java:136) | at org.jbpm.svc.Services.getPersistenceService(Services.java:175) | at org.jbpm.JbpmContext.getPersistenceService(JbpmContext.java:594) | at org.jbpm.JbpmContext.getMessagingSession(JbpmContext.java:519) | at org.jbpm.msg.db.DbMessageService.<init>(DbMessageService.java:49) | at org.jbpm.msg.db.DbMessageServiceFactory.openService(DbMessageServiceFactory.java:32) | at org.jbpm.svc.Services.getService(Services.java:136) | at org.jbpm.svc.Services.getMessageService(Services.java:172) | at org.jbpm.msg.command.CommandExecutorThread.executeCommand(CommandExecutorThread.java:112) | at org.jbpm.msg.command.CommandExecutorThread.run(CommandExecutorThread.java:79) | Thanks for help. Regards, Jeferson Zanim View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3985503#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...