The example explains page linking and IPC. I found following problems on cr2 1) In page linking following line in example has problem PortalNode linkToNode = thisNode.resolve("../default"); linkToNode gives null when i print it. That is why the window appers blank.so i put comment for page linking Now the dragDown list of colors appears as in example but clicking on button it gives exception javax.servlet.ServletException: No window state has been provided | org.jboss.portal.server.servlet.PortalServlet.service(PortalServlet.java:386) | javax.servlet.http.HttpServlet.service(HttpServlet.java:810) | org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) But the example works in beta-1 without having any issue . Thanks mohan View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4048580#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...