#133 Principal is null for authentication

[Thomas Gideon]

If I secure the jmx-invoker under JBoss 4.0.3SP1 per
the documentation (editing the jboss-service.xml under
jmx-invoker in the deploy directory to uncomment the
authentication interceptor), then I get an error on
trying to connect. The original cause is an
authentication error and it appears to be saying that
the authentication principal is null.