Hello,
I am trying to use Drools Flow with GWT Console v.2.1. I use Guvnor and Eclipse too. I am new in server applications, and jBoss is for me something new, so please be patient :)
What I did are:
1.)Creating processes in Eclipse. They work.
2.)Exporting them to Guvnor - I can see them, everything is OK.

Then I try to start GWT-Console. When I log in, I get this:

HTTP 500:

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception 

org.jboss.resteasy.spi.UnhandledException: java.lang.IllegalArgumentException: Could not connect task client
	org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:319)


	org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:230)
	org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:206)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:360)


	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:173)
	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:93)
	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:68)


	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.jboss.bpm.console.server.util.GWTJsonFilter.doFilter(GWTJsonFilter.java:59)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause 

java.lang.IllegalArgumentException: Could not connect task client
	org.drools.integration.console.DroolsFlowTaskManagement.connect(DroolsFlowTaskManagement.java:43)
	org.drools.integration.console.DroolsFlowTaskManagement.getAssignedTasks(DroolsFlowTaskManagement.java:112)


	org.jboss.bpm.console.server.TaskListFacade.getTasksForIdRef(TaskListFacade.java:99)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)


	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	java.lang.reflect.Method.invoke(Method.java:597)
	org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:117)


	org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:260)
	org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:232)
	org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:166)


	org.jboss.resteasy.core.DispatcherUtilities.getJaxrsResponse(DispatcherUtilities.java:142)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:173)


	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:93)
	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:68)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


	org.jboss.bpm.console.server.util.GWTJsonFilter.doFilter(GWTJsonFilter.java:59)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

note The full stack trace of the root cause is available in the JBoss Web/2.




When I click on Process Overwiev, I get:



HTTP 500:

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception 

org.jboss.resteasy.spi.UnhandledException: java.lang.RuntimeException: Could not initialize stateful knowledge session: Could not commit session or rollback
	org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:319)


	org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:230)
	org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:206)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:360)


	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:173)
	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:93)
	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:68)


	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.jboss.bpm.console.server.util.GWTJsonFilter.doFilter(GWTJsonFilter.java:59)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause 

java.lang.RuntimeException: Could not initialize stateful knowledge session: Could not commit session or rollback
	org.drools.integration.console.DroolsFlowCommandDelegate.newStatefulKnowledgeSession(DroolsFlowCommandDelegate.java:86)


	org.drools.integration.console.DroolsFlowCommandDelegate.getSession(DroolsFlowCommandDelegate.java:94)
	org.drools.integration.console.DroolsFlowCommandDelegate.<init>(DroolsFlowCommandDelegate.java:37)
	org.drools.integration.console.DroolsFlowProcessManagement.<init>(DroolsFlowProcessManagement.java:20)


	org.drools.integration.console.DroolsFlowManagementFactory.createProcessManagement(DroolsFlowManagementFactory.java:11)
	org.jboss.bpm.console.server.ProcessMgmtFacade.getProcessManagement(ProcessMgmtFacade.java:98)


	org.jboss.bpm.console.server.ProcessMgmtFacade.getDefinitionsJSON(ProcessMgmtFacade.java:122)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)


	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	java.lang.reflect.Method.invoke(Method.java:597)
	org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:117)


	org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:260)
	org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:232)
	org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:166)


	org.jboss.resteasy.core.DispatcherUtilities.getJaxrsResponse(DispatcherUtilities.java:142)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:173)


	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:93)
	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:68)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


	org.jboss.bpm.console.server.util.GWTJsonFilter.doFilter(GWTJsonFilter.java:59)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause 

java.lang.RuntimeException: Could not commit session or rollback


	org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:289)
	org.drools.command.impl.CommandBasedStatefulKnowledgeSession$1.registerWorkItemHandler(CommandBasedStatefulKnowledgeSession.java:144)


	org.drools.integration.console.DroolsFlowCommandDelegate.newStatefulKnowledgeSession(DroolsFlowCommandDelegate.java:80)
	org.drools.integration.console.DroolsFlowCommandDelegate.getSession(DroolsFlowCommandDelegate.java:94)


	org.drools.integration.console.DroolsFlowCommandDelegate.<init>(DroolsFlowCommandDelegate.java:37)
	org.drools.integration.console.DroolsFlowProcessManagement.<init>(DroolsFlowProcessManagement.java:20)


	org.drools.integration.console.DroolsFlowManagementFactory.createProcessManagement(DroolsFlowManagementFactory.java:11)
	org.jboss.bpm.console.server.ProcessMgmtFacade.getProcessManagement(ProcessMgmtFacade.java:98)


	org.jboss.bpm.console.server.ProcessMgmtFacade.getDefinitionsJSON(ProcessMgmtFacade.java:122)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)


	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	java.lang.reflect.Method.invoke(Method.java:597)
	org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:117)


	org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:260)
	org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:232)
	org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:166)


	org.jboss.resteasy.core.DispatcherUtilities.getJaxrsResponse(DispatcherUtilities.java:142)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:173)


	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:93)
	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:68)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


	org.jboss.bpm.console.server.util.GWTJsonFilter.doFilter(GWTJsonFilter.java:59)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause 

java.lang.RuntimeException: Unable to rollback transaction


	org.drools.persistence.session.JtaTransactionManager.rollback(JtaTransactionManager.java:181)
	org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:287)
	org.drools.command.impl.CommandBasedStatefulKnowledgeSession$1.registerWorkItemHandler(CommandBasedStatefulKnowledgeSession.java:144)


	org.drools.integration.console.DroolsFlowCommandDelegate.newStatefulKnowledgeSession(DroolsFlowCommandDelegate.java:80)
	org.drools.integration.console.DroolsFlowCommandDelegate.getSession(DroolsFlowCommandDelegate.java:94)


	org.drools.integration.console.DroolsFlowCommandDelegate.<init>(DroolsFlowCommandDelegate.java:37)
	org.drools.integration.console.DroolsFlowProcessManagement.<init>(DroolsFlowProcessManagement.java:20)


	org.drools.integration.console.DroolsFlowManagementFactory.createProcessManagement(DroolsFlowManagementFactory.java:11)
	org.jboss.bpm.console.server.ProcessMgmtFacade.getProcessManagement(ProcessMgmtFacade.java:98)


	org.jboss.bpm.console.server.ProcessMgmtFacade.getDefinitionsJSON(ProcessMgmtFacade.java:122)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)


	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	java.lang.reflect.Method.invoke(Method.java:597)
	org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:117)


	org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:260)
	org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:232)
	org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:166)


	org.jboss.resteasy.core.DispatcherUtilities.getJaxrsResponse(DispatcherUtilities.java:142)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:173)


	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:93)
	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:68)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


	org.jboss.bpm.console.server.util.GWTJsonFilter.doFilter(GWTJsonFilter.java:59)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause 

java.lang.IllegalStateException: BaseTransaction.rollback - [com.arjuna.ats.internal.jta.transaction.arjunacore.notx] [com.arjuna.ats.internal.jta.transaction.arjunacore.notx] no transaction!


	com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.rollback(BaseTransaction.java:160)
	com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.rollback(BaseTransactionManagerDelegate.java:114)
	org.jboss.tm.usertx.client.ServerVMClientUserTransaction.rollback(ServerVMClientUserTransaction.java:170)


	org.drools.persistence.session.JtaTransactionManager.rollback(JtaTransactionManager.java:178)
	org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:287)
	org.drools.command.impl.CommandBasedStatefulKnowledgeSession$1.registerWorkItemHandler(CommandBasedStatefulKnowledgeSession.java:144)


	org.drools.integration.console.DroolsFlowCommandDelegate.newStatefulKnowledgeSession(DroolsFlowCommandDelegate.java:80)
	org.drools.integration.console.DroolsFlowCommandDelegate.getSession(DroolsFlowCommandDelegate.java:94)


	org.drools.integration.console.DroolsFlowCommandDelegate.<init>(DroolsFlowCommandDelegate.java:37)
	org.drools.integration.console.DroolsFlowProcessManagement.<init>(DroolsFlowProcessManagement.java:20)


	org.drools.integration.console.DroolsFlowManagementFactory.createProcessManagement(DroolsFlowManagementFactory.java:11)
	org.jboss.bpm.console.server.ProcessMgmtFacade.getProcessManagement(ProcessMgmtFacade.java:98)


	org.jboss.bpm.console.server.ProcessMgmtFacade.getDefinitionsJSON(ProcessMgmtFacade.java:122)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)


	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	java.lang.reflect.Method.invoke(Method.java:597)
	org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:117)


	org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:260)
	org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:232)
	org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:166)


	org.jboss.resteasy.core.DispatcherUtilities.getJaxrsResponse(DispatcherUtilities.java:142)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356)
	org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:173)


	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:93)
	org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:68)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


	org.jboss.bpm.console.server.util.GWT


ProcessEnginePlugin is marked with this:     


I don't know what to do. I read similar thread to this one, but with no results for me...
Ramran wrote there:

   "The gwt-server-console.jar contains 2 javaassit jar files. I have deleted both these jars and used only 1 javassist.jar file in the JBOSS lib folder. Try it "

But I was looking for javaassit.jar in gwt-server-console.jar, but I don't have gwt-server-console.jar file in my jBoss... I have only "gwt-console-server-
integration-2.1.jar".

I want to show you my jBoss logs while starting this server:

09:26:24,129 INFO  [TomcatDeployment] deploy, ctxPath=/admin-console
09:26:24,176 INFO  [config] Initializing Mojarra (1.2_12-b01-FCS) for context '/admin-console'
09:26:27,109 INFO  [TomcatDeployment] deploy, ctxPath=/
09:26:27,171 INFO  [TomcatDeployment] deploy, ctxPath=/drools-guvnor
09:26:38,279 ERROR [STDERR] SLF4J: Class path contains multiple SLF4J bindings.
09:26:38,294 ERROR [STDERR] SLF4J: Found binding in [vfszip:/C:/jboss-5.1.0.GA/server/default/deploy/drools-guvnor.war/WEB-INF/lib/slf4j-log4j12-1.6.0.jar/org/slf4j/impl/StaticLoggerBinder.class]
09:26:38,294 ERROR [STDERR] SLF4J: Found binding in [vfszip:/C:/jboss-5.1.0.GA/common/lib/slf4j-jboss-logging.jar/org/slf4j/impl/StaticLoggerBinder.class]
09:26:38,294 ERROR [STDERR] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
09:26:44,721 INFO  [STDOUT] INFO  27-07 09:26:44,706 (LoggingHelper.java:info:51)      Starting mailbox service
09:26:44,721 INFO  [STDOUT] INFO  27-07 09:26:44,721 (LoggingHelper.java:info:51)      Waking up
09:26:44,737 INFO  [STDOUT] INFO  27-07 09:26:44,721 (LoggingHelper.java:info:51)      Processing outgoing messages
09:26:44,784 INFO  [STDOUT] DEBUG 27-07 09:26:44,784 (LoggingHelper.java:debug:65)      Outgoing messages size 0
09:26:44,815 INFO  [TomcatDeployment] deploy, ctxPath=/gwt-console
09:26:44,831 INFO  [STDOUT] DEBUG 27-07 09:26:44,831 (LoggingHelper.java:debug:65)      Processing any inbound messages for mailman
09:26:44,831 INFO  [STDOUT] DEBUG 27-07 09:26:44,831 (LoggingHelper.java:debug:65)      Processing any inbound messages for admin
09:26:44,877 ERROR [STDERR] SLF4J: Class path contains multiple SLF4J bindings.
09:26:44,877 ERROR [STDERR] SLF4J: Found binding in [vfszip:/C:/jboss-5.1.0.GA/common/lib/slf4j-jboss-logging.jar/org/slf4j/impl/StaticLoggerBinder.class]
09:26:44,877 ERROR [STDERR] SLF4J: Found binding in [vfszip:/C:/jboss-5.1.0.GA/server/default/deploy/gwt-console-drools-5.1.0.CR1.war/WEB-INF/lib/slf4j-log4j12-1.6.0.jar/org/slf4j/impl/StaticLoggerBinder.class]
09:26:44,877 ERROR [STDERR] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
09:26:45,938 ERROR [STDERR] log4j:ERROR A "org.jboss.logging.appender.FileAppender" object is not assignable to a "org.apache.log4j.Appender" variable.
09:26:45,938 ERROR [STDERR] log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
09:26:45,938 ERROR [STDERR] log4j:ERROR [BaseClassLoader@44ee06be{vfsfile:/C:/jboss-5.1.0.GA/server/default/deploy/gwt-console-drools-5.1.0.CR1.war/}] whereas object of type
09:26:45,938 ERROR [STDERR] log4j:ERROR "org.jboss.logging.appender.FileAppender" was loaded by [org.jboss.bootstrap.NoAnnotationURLClassLoader@4ce86da0].
09:26:45,938 ERROR [STDERR] log4j:ERROR Could not instantiate appender named "FILE".

.
.
.

09:26:51,445 ERROR [SchemaUpdate] could not get database metadata
org.jboss.util.NestedSQLException: Unable to get managed connection for jdbc/testDS1; - nested throwable: (javax.resource.ResourceException: Unable to get managed connection for jdbc/testDS1)
    at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:95)

.
.
.

09:26:51,445 ERROR [SchemaUpdate] could not complete schema update
org.jboss.util.NestedSQLException: Unable to get managed connection for jdbc/testDS1; - nested throwable: (javax.resource.ResourceException: Unable to get managed connection for jdbc/testDS1)
    at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:95)
.
.
.

09:26:52,053 ERROR [STDERR] log4j:ERROR A "org.jboss.logging.appender.FileAppender" object is not assignable to a "org.apache.log4j.Appender" variable.
09:26:52,053 ERROR [STDERR] log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
09:26:52,053 ERROR [STDERR] log4j:ERROR [BaseClassLoader@34fe7e0e{vfsfile:/C:/jboss-5.1.0.GA/server/default/deploy/gwt-console-server-drools-5.1.0.CR1.war/}] whereas object of type
09:26:52,053 ERROR [STDERR] log4j:ERROR "org.jboss.logging.appender.FileAppender" was loaded by [org.jboss.bootstrap.NoAnnotationURLClassLoader@4ce86da0].
09:26:52,053 ERROR [STDERR] log4j:ERROR Could not instantiate appender named "FILE".


Thanks for any advise,
tom.