webfacing & WAS 5.0 test environment

I'm going through Claus Weiss's tutorial, and when I try to run the app in
WDSC by selecting Run on Server, WebSphere v5.0 Test Environment, I get an
HTTP 500 error.  From the console log it looks like it has to do with
logging on.

I appreciate any help!

Phil

This is from the console:
[9/3/04 14:31:02:167 EDT] 4adb0229 WebGroup      E SRVE0026E: [Servlet
Error]-[LogonServlet]: java.lang.NullPointerException
      at
com.ibm.as400ad.webfacing.runtime.httpcontroller.LogonServlet.doPost(Unknown

Source)
      at
com.ibm.as400ad.webfacing.runtime.httpcontroller.LogonServlet.doGet(Unknown
Source)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
      at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.
_service(StrictLifecycleServlet.java:174)
      at
com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
      at
com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
      at
com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
      at
com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
      at
com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
      at
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:948)
      at
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:530)
      at
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:176)
      at
com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:79)
      at
com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:201)
      at
com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
      at
com.ibm.ws.webcontainer.cache.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:114)
      at
com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:186)
      at
com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
      at
com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
      at
com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:610)
      at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:435)
      at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:593)