It seems that the instrumentation support has been broken due to the recent update to the released instrumentation version:
Exception in thread "main" java.lang.reflect.InvocationTargetException: java.lang.NoClassDefFoundError: org/apache/altrmi/server/impl/AbstractServer
That's because the released version of Instrumentation uses the latest released version of the AltRMI project at incubator.apache.org.
I updated the jars and the entries in jars.xml.
It should work fine now (in CVS).