1732581 - SSO not working for BI Launchpad and receiving HTTP 500 error

• Vintela SSO is not working for the BI Launchpad and getting below mentioned error:
  
  HTTP Status 500 -
  --------------------------------------------------------------------------------
  type Exception report
  message
  description The server encountered an internal error () that prevented it from fulfilling this request.
  exception
   
  java.lang.RuntimeException: java.lang.NullPointerException
   com.businessobjects.http.servlet.internal.BundlePathAwareServiceHandler.serviceHelper(BundlePathAwareServiceHandler.java:254)
   com.businessobjects.http.servlet.internal.BundlePathAwareServiceHandler.service(BundlePathAwareServiceHandler.java:197)
   com.businessobjects.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:248)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   org.eclipse.equinox.servletbridge.BridgeServlet.service(BridgeServlet.java:220)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   com.businessobjects.pinger.TimeoutManagerFilter.doFilter(TimeoutManagerFilter.java:159)
   
  Error message in stdout.log is
   
  [DEBUG] Tue May 22 09:48:38 EDT 2012 jcsi.kerberos: Not forwarding a TGT for delegation because...
  [DEBUG] Tue May 22 09:48:38 EDT 2012 jcsi.kerberos: OK-AS-DELEGATE not in svc tkt

• SAP BusinessObjects BI 4.0 SP02
• Tomcat 6

BI 4.0, SSO, HTTP 500, Delegation, Single Sign On, Vintela , KBA , BI-BIP-AUT , Authentication, ActiveDirectory, LDAP, SSO, Vintela , Problem