Thanks for pointing it out. Please report the problem to the XDoclet list as well and put a bug report in our system so we can follow up with XDoclet. Also Andreas (firstname.lastname@example.org) should know about this, send him an email pointing this out. The bottom line is that openJMX.jar is very old (it changed names like 6 months ago) and also the current version is lagging behind, Simone is doing worthy work there but the versions are behind JBoss. Also JBoss is really the reference implementation on JMX and should really be the target of XDoclet. Let him and them know to please replace the JAR with the latest from us.
Is JMX generated independently of the rest of JBoss today? we should package the base JBossMX for these guys.
Please let me know directly by email (marc@Jboss.org) if you talk to them,