Hi all, In the event of installing the JBoss Application server and Portal. These are steps that i followed 1. I have downloded the Jboss 4.0.4 CR2 and Jboss Portal 2.4 ALPHA. I have unzipped both the zip files and now i configured the portal-sqlserverds.xml file in the portal and copied both the configured xml and the portal.sar file to the JBOSS_Home/default/deploy directory of the App Server. 2. Then i have copied the jdbc jar files to the default/lib directory. 3. Prior to this i have also set the environment variables to the path, classpath, JBOSS_HOME; JAVA_HOME. 4. I started the run.bat file in the jboss/bin. 5. The jboss server started, but i encountered the following error when i pointed the browser to the portal. HTTP Status 500 - -------------------------------------------------------------------------------- type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception java.lang.IllegalArgumentException: Cannot invoke with a null interceptor[] org.jboss.portal.common.invocation.Invocation.invoke(Invocation.java:163) org.jboss.portal.server.servlet.PortalServlet.doGet(PortalServlet.java:231) javax.servlet.http.HttpServlet.service(HttpServlet.java:697) javax.servlet.http.HttpServlet.service(HttpServlet.java:810) org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) note The full stack trace of the root cause is available in the Apache Tomcat/5.5.16 logs. ---Raj -------------------------------------------------------------------------------- Apache Tomcat/5.5.16 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3972466#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...