Problems with C2 and Tomcat 3: org.apache.cocoon.ProcessingException

[as...@bekk.no]

I've just built Cocoon 2.0a3.
I'm trying to get it to work on Tomcat 3.2.1.
I've copied cocoon.war to Tomcat's webapps directory and pointed my browser
to http://localhost/cocoon/
This is what I get:

org.apache.cocoon.ProcessingException: The sitemap handler's sitemap is not
available.
           at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:88)
           at org.apache.cocoon.Cocoon.process(Cocoon.java:247)
           at
org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:344)
           at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
           at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
           at org.apache.tomcat.core.Handler.service(Handler.java:286)
           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)

Does anybody know what I'm doing wrong, and how to fix it?

Cheers, Aslak