17:05:22,933 ERROR [InvokeWindowActionCommand] An portlet exception occured in portlet helloworldipc.oplista
javax.portlet.PortletException: Nothing to invoke
at org.jboss.portlet.JBossPortlet.doDispatch(JBossPortlet.java:186)
at org.jboss.portlet.JBossPortlet.processAction(JBossPortlet.java:109)
at org.jboss.portlet.JBossPortlet.processAction(JBossPortlet.java:355)
at org.jboss.portal.portlet.PortletContainer.invokeAction(PortletContainer.java:483)
at org.jboss.portal.portlet.PortletContainer.dispatch(PortletContainer.java:424)
at org.jboss.portal.server.app.ComponentInvocation.dispatch(ComponentInvocation.java:79)
at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:140)
at org.jboss.portal.core.aspects.component.TransactionInterceptor.invoke(TransactionInterceptor.java:72)
at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.component.HeaderInterceptor.invoke(HeaderInterceptor.java:50)
at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.server.aspects.component.NavigationInterceptor.invoke(NavigationInterceptor.java:76)
at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.server.aspects.component.CacheInterceptor.invoke(CacheInterceptor.java:167)
at org.jboss.portal.server.app.ComponentInterceptor.invoke(ComponentInterceptor.java:38)
at org.jboss.portal.server.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.server.aspects.component.ModesInterceptor.invoke(ModesInterceptor.java:88)
