IllegalStateException: Can't happen

[Terry Westley <tw...@acm.org>]

I know this is a repeat.  The archives and FAQ offer explanations, but
not much help with eliminating this intermittent error.

I'm using Tomcat 3.2.1 on WinXP Pro RC2 with MS IE6.  Should I move on to
Tomcat 3.2.3 or 4.0?  Will that help?  As noted previously, stopping and
restarting tomcat makes the problem go away for awhile, until I make some
change to a servlet.

Although I have no way of knowing for sure, I hope it's not WinXP.  So far,
the beta and RC1 haven't been a problem.

--
Terry Westley
twestley@acm.org

------------------------------------------------------------------------------
Error: 500
Location: /sigada2001/index.html
Internal Servlet Error:

java.lang.IllegalStateException: Can't happen - classname is null, who added this ?
	at org.apache.tomcat.core.ServletWrapper.loadServlet(ServletWrapper.java:261)
	at org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:289)
	at org.apache.tomcat.core.Handler.service(Handler.java:254)
	at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
	at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
	at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
	at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
	at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
	at java.lang.Thread.run(Thread.java:484)