and for clearer information: 17:54:26,062 ERROR [STDERR] java.lang.NullPointerException | 17:54:26,062 ERROR [STDERR] at org.jboss.portlet.JBossRenderResponse.createRenderURL(JBossRenderResponse.java:71) | 17:54:26,062 ERROR [STDERR] at org.jboss.portlet.hello.HelloWorldPortletA.doView(HelloWorldPortletA.java:26) | 17:54:26,062 ERROR [STDERR] at org.jboss.portlet.JBossPortlet.doDispatch(JBossPortlet.java:257) | 17:54:26,062 ERROR [STDERR] at org.jboss.portlet.JBossPortlet.render(JBossPortlet.java:244) | 17:54:26,062 ERROR [STDERR] at org.jboss.portlet.JBossPortlet.render(JBossPortlet.java:390) | 17:54:26,062 ERROR [STDERR] at org.jboss.portal.portlet.impl.jsr168.PortletContainerImpl.invokeRender(Portl which means here: | // link to a page | html.append("<-- Page Linking --><br/>"); | PortalNode thisNode = req.getPortalNode().getParent(); // will return this Page as a node. | PortalNode linkToNode = thisNode.resolve("../default"); | PortalNodeURL pageURL = resp.createRenderURL(linkToNode); ///HERE!!!! | html.append("Page: " + linkToNode.getName() + " -> "); | html.append("<a href=\"" + pageURL.toString() + "\">" + linkToNode.getName() + "</a>"); | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4130165#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...