Exception during http request java.lang.ClassCastException: javax.management.ObjectName

Hello,

I wanted to give the phoenix nightly build a whirl, so I downloaded
http://jakarta.apache.org/builds/jakarta-avalon-phoenix/nightly/2002-10-15/phoenix-4.0.1-bin.tar.gz
unpacked it, copied freshly built avalon-dev.sar into apps, started
phoenix using phoenix/bin/run.sh. The app deployed ok and worked
fine. The trouble is: Managment Interface on localhost:8082 doesn't work
and an exception is logged:

INFO    2002-10-17 12:31:43.128 [Phoenix ] (): Logger started
WARN    2002-10-17 12:31:43.258 [Phoenix ] (): Phoenix was not started
by the daemon thus it will not be possible to restart the JVM via the
Management interface.
INFO    2002-10-17 12:31:44.947 [Phoenix.] (): Installing Sar located at
        file:/home/greg/installs/phoenix-4.0.1/apps/avalon-demo.sar.
INFO    2002-10-17 12:31:45.347 [Phoenix.] (): Verifying that the name
specified for Blocks and BlockListeners are valid.
INFO    2002-10-17 12:31:45.348 [Phoenix.] (): Verifying that the name
specified for Blocks and BlockListeners are unique.
INFO    2002-10-17 12:31:45.348 [Phoenix.] (): Verifying that the
specified Dependencies are valid according to BlockInfo.
INFO    2002-10-17 12:31:45.349 [Phoenix.] (): Verifying that the
dependencies of Blocks are valid with respect to other Blocks.
INFO    2002-10-17 12:31:45.349 [Phoenix.] (): Verifying that there are
no circular dependencies between Blocks.
INFO    2002-10-17 12:31:45.350 [Phoenix.] (): Verifying that the
specified Blocks have valid types.
INFO    2002-10-17 12:31:45.388 [Phoenix.] (): Verifying that the
specified BlockListeners have valid types.
INFO    2002-10-17 12:31:45.495 [Phoenix.] (): 5 Blocks to process for
phase "startup". Order of processing = [thread-manager, connections,
sockets, scheduler, helloworldserver].
WARN    2002-10-17 12:32:26.129 [Phoenix.] (): Exception during http
java.lang.ClassCastException: javax.management.ObjectName
 at 
mx4j.server.MBeanServerImpl.filterMBeansBySecurity(MBeanServerImpl.java:1642)
 at mx4j.server.MBeanServerImpl.queryObjectNames(MBeanServerImpl.java:1528)
 at mx4j.server.MBeanServerImpl.queryMBeans(MBeanServerImpl.java:1477)
 at 
mx4j.adaptor.http.ServerByDomainCommandProcessor.executeRequest(ServerByDomainCommandProcessor.java:62)
 at mx4j.adaptor.http.HttpAdaptor$HttpClient.run(HttpAdaptor.java:990)
request 
        
Any ideas what could be wrong?

Apologies in advance if this is a known issue and I missed it in Phoenix
list archive.

Thanks
Greg