File Upload Not Working in JBoss Portal Environment

[mosi_123]

Hello All,

I am having trouble issuing a File Upload within the Alfresco Web Client Portlet - which is running within the JBoss Portal Environment. I am using the HEAD (2.0) revision of the Alfresco Web Client and using JBoss 4.0.5GA + JBoss Portal 2.4.1. I am logged into the Alfresco Portlet with the admin user id. Details blow, but does anyone have any ideas or could point me to the how-to resolve documentation? I am suspecting that this is resolved somewhere but haven't been able to find any documentation on how to fix.
We've tried removing the myfaces libs from the alfresco war t no avail, AND we could not find the jsf*.jar files in the alfresco.war mentioned in http://wiki.alfresco.com/wiki/Build_and_Deploy_WAR_JBossPortal


STEPS TO REPRO:
1. Click on "Add Content"
2. Click on Browse
3. Select file "sample.txt"
4. Click the "Upload" submit button

ERROR MESSAGE:
javax.portlet.PortletException: java.lang.NullPointerException
at org.apache.myfaces.portlet.MyFacesGenericPortlet.handleExceptionFromLifecycle(MyFacesGenericPortlet.java:313)
at org.apache.myfaces.portlet.MyFacesGenericPortlet.facesRender(MyFacesGenericPortlet.java:502)
at org.alfresco.web.app.portlet.AlfrescoFacesPortlet.facesRender(AlfrescoFacesPortlet.java:346)
at org.apache.myfaces.portlet.MyFacesGenericPortlet.doView(MyFacesGenericPortlet.java:323)
at javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:133)
at javax.portlet.GenericPortlet.render(GenericPortlet.java:306)
at org.jboss.portal.portlet.container.PortletContainer.invokeRender(PortletContainer.java:518)
at org.jboss.portal.portlet.container.PortletContainer.dispatch(PortletContainer.java:434)
at org.jboss.portal.portlet.container.PortletContainerInvoker$1.dispatch(PortletContainerInvoker.java:144)
at org.jboss.portal.portlet.invocation.PortletInvocation.dispatch(PortletInvocation.java:223)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:140)
at org.jboss.portal.core.aspects.portlet.TransactionInterceptor.org$jboss$portal$core$aspects$portlet$TransactionInterceptor$invokeNotSupported$aop(TransactionInterceptor.java:85)
at org.jboss.portal.core.aspects.portlet.TransactionInterceptor$invokeNotSupported_4827075286966232824.invokeNext(TransactionInterceptor$invokeNotSupported_4827075286966232824.java)
at org.jboss.aspects.tx.TxPolicy.invokeInNoTx(TxPolicy.java:66)
at org.jboss.aspects.tx.TxInterceptor$NotSupported.invoke(TxInterceptor.java:102)
at org.jboss.portal.core.aspects.portlet.TransactionInterceptor$invokeNotSupported_4827075286966232824.invokeNext(TransactionInterceptor$invokeNotSupported_4827075286966232824.java)
at org.jboss.portal.core.aspects.portlet.TransactionInterceptor.invokeNotSupported(TransactionInterceptor.java)
at org.jboss.portal.core.aspects.portlet.TransactionInterceptor.invoke(TransactionInterceptor.java:55)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.portlet.HeaderInterceptor.invoke(HeaderInterceptor.java:49)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.ProducerCacheInterceptor.invoke(ProducerCacheInterceptor.java:51)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.ModesInterceptor.invoke(ModesInterceptor.java:60)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.bridge.BridgeInterceptor.invoke(BridgeInterceptor.java:46)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.WindowStatesInterceptor.invoke(WindowStatesInterceptor.java:55)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.PortletSessionSynchronizationInterceptor.invoke(PortletSessionSynchronizationInterceptor.java:77)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.ContextDispatcherInterceptor$InvokeNextCommand.execute(ContextDispatcherInterceptor.java:141)
at sun.reflect.GeneratedMethodAccessor742.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.portal.server.servlet.CommandServlet.doGet(CommandServlet.java:99)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:539)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
at org.jboss.portal.portlet.impl.spi.AbstractRequestContext.include(AbstractRequestContext.java:194)
at org.jboss.portal.portlet.aspects.portlet.ContextDispatcherInterceptor$1.include(ContextDispatcherInterceptor.java:69)
at org.jboss.portal.server.servlet.CommandServlet.include(CommandServlet.java:79)
at org.jboss.portal.portlet.aspects.portlet.ContextDispatcherInterceptor.invoke(ContextDispatcherInterceptor.java:75)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.ContextTrackerInterceptor.invoke(ContextTrackerInterceptor.java:49)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.SecureTransportInterceptor.invoke(SecureTransportInterceptor.java:65)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.ValveInterceptor.invoke(ValveInterceptor.java:57)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.common.invocation.Invocation.invoke(Invocation.java:171)
at org.jboss.portal.portlet.container.PortletContainerInvoker.invoke(PortletContainerInvoker.java:115)
at sun.reflect.GeneratedMethodAccessor501.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:8Cool
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:8Cool
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy56.invoke(Unknown Source)
at org.jboss.portal.portlet.state.producer.StatefulPortletInvoker.invoke(StatefulPortletInvoker.java:250)
at sun.reflect.GeneratedMethodAccessor500.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:8Cool
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:8Cool
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy58.invoke(Unknown Source)
at org.jboss.portal.federation.impl.FederatedPortletInvokerService.invoke(FederatedPortletInvokerService.java:140)
at org.jboss.portal.federation.impl.FederatingPortletInvokerService.invoke(FederatingPortletInvokerService.java:156)
at sun.reflect.GeneratedMethodAccessor499.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:8Cool
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:8Cool
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy60.invoke(Unknown Source)
at org.jboss.portal.portlet.test.TestPortletInvoker$1.dispatch(TestPortletInvoker.java:62)
at org.jboss.portal.portlet.invocation.PortletInvocation.dispatch(PortletInvocation.java:223)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:140)
at org.jboss.portal.portlet.aspects.portlet.PortalSessionSynchronizationInterceptor.invoke(PortalSessionSynchronizationInterceptor.java:86)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.ConsumerCacheInterceptor.invoke(ConsumerCacheInterceptor.java:128)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.model.instance.InstanceSecurityInterceptor.invoke(InstanceSecurityInterceptor.java:83)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.common.invocation.Invocation.invoke(Invocation.java:171)
at org.jboss.portal.portlet.test.TestPortletInvoker.invoke(TestPortletInvoker.java:122)
at sun.reflect.GeneratedMethodAccessor497.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:8Cool
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:8Cool
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy42.invoke(Unknown Source)
at org.jboss.portal.core.impl.model.instance.InstanceImpl.invoke(InstanceImpl.java:273)
at org.jboss.portal.core.command.RenderWindowCommand.execute(RenderWindowCommand.java:108)
at org.jboss.portal.core.command.ControllerCommand.dispatch(ControllerCommand.java:91)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:140)
at org.jboss.portal.core.aspects.controller.EventBroadcasterInterceptor.invoke(EventBroadcasterInterceptor.java:171)
at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.controller.PageNavigationInterceptor.invoke(PageNavigationInterceptor.java:80)
at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.controller.PolicyEnforcementInterceptor.invoke(PolicyEnforcementInterceptor.java:79)
at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.controller.PortalNodeInterceptor.invoke(PortalNodeInterceptor.java:59)
at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.common.invocation.Invocation.invoke(Invocation.java:171)
at org.jboss.portal.core.command.CommandContext.execute(CommandContext.java:102)
at org.jboss.portal.core.command.ExecutionContext.execute(ExecutionContext.java:91)
at org.jboss.portal.core.command.CommandContext.chain(CommandContext.java:148)
at org.jboss.portal.core.command.MarkupCommand.renderPortletWindow(MarkupCommand.java:463)
at org.jboss.portal.core.command.RenderPageCommand.renderFragments(RenderPageCommand.java:76)
at org.jboss.portal.core.command.MarkupCommand.execute(MarkupCommand.java:340)
at org.jboss.portal.core.command.ControllerCommand.dispatch(ControllerCommand.java:91)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:140)
at org.jboss.portal.core.aspects.controller.EventBroadcasterInterceptor.invoke(EventBroadcasterInterceptor.java:171)
at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.controller.PageNavigationInterceptor.invoke(PageNavigationInterceptor.java:80)
at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.controller.PolicyEnforcementInterceptor.invoke(PolicyEnforcementInterceptor.java:79)
at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.controller.PortalNodeInterceptor.invoke(PortalNodeInterceptor.java:59)
at org.jboss.portal.core.command.CommandInterceptor.invoke(CommandInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.common.invocation.Invocation.invoke(Invocation.java:171)
at org.jboss.portal.core.command.CommandContext.execute(CommandContext.java:102)
at org.jboss.portal.core.command.ExecutionContext.execute(ExecutionContext.java:91)
at org.jboss.portal.core.command.ExecutionContext.execute(ExecutionContext.java:152)
at org.jboss.portal.core.command.ExecutionContext.execute(ExecutionContext.java:7Cool
at org.jboss.portal.core.CoreController.handle(CoreController.java:126)
at sun.reflect.GeneratedMethodAccessor664.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:8Cool
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:8Cool
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.JMXInvocationHandler.invoke(JMXInvocationHandler.java:287)
at $Proxy249.handle(Unknown Source)
at org.jboss.portal.server.ServerInvocation.dispatch(ServerInvocation.java:80)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:140)
at org.jboss.portal.server.aspects.server.NavigationInterceptor.invoke(NavigationInterceptor.java:65)
at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.server.aspects.server.ContentTypeInterceptor.invoke(ContentTypeInterceptor.java:65)
at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.server.LocaleInterceptor.invoke(LocaleInterceptor.java:74)
at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.server.UserInterceptor.invoke(UserInterceptor.java:174)
at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.server.aspects.server.SessionInvalidatorInterceptor.invoke(SessionInvalidatorInterceptor.java:84)
at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.server.TransactionInterceptor.org$jboss$portal$core$aspects$server$TransactionInterceptor$invoke$aop(TransactionInterceptor.java:49)
at org.jboss.portal.core.aspects.server.TransactionInterceptor$invoke_N5143606530999904530.invokeNext(TransactionInterceptor$invoke_N5143606530999904530.java)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
at org.jboss.aspects.tx.TxInterceptor$RequiresNew.invoke(TxInterceptor.java:262)
at org.jboss.portal.core.aspects.server.TransactionInterceptor$invoke_N5143606530999904530.invokeNext(TransactionInterceptor$invoke_N5143606530999904530.java)
at org.jboss.portal.core.aspects.server.TransactionInterceptor.invoke(TransactionInterceptor.java)
at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:3Cool
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.common.invocation.Invocation.invoke(Invocation.java:171)
at org.jboss.portal.server.servlet.PortalServlet.process(PortalServlet.java:295)
at org.jboss.portal.server.servlet.PortalServlet.doGet(PortalServlet.java:173)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
at org.apache.myfaces.context.portlet.PortletExternalContextImpl.dispatch(PortletExternalContextImpl.java:167)
at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:175)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
at org.apache.myfaces.portlet.MyFacesGenericPortlet.facesRender(MyFacesGenericPortlet.java:498)

[mosi_123]

Also, forgot to mention, that after clicking on "Upload" and I get the error message, if I click the browser back button, it shows that the upload was successful and from then on everything works fine.. But why the error message?

Thanks..