Hi, I am setting up JBOSS clusters in both TCP and UDP mode. Things are working fine, but in the jmx-console --> jboss.service=<PARTITION>, JGroupsVersion is shown as javax.management.RuntimeErrorException. I am using JBOSS 4.0.5GA and copied jgroups-all.jar (version 2.2.9 and 2.4.1) to replace jgroups.jar that comes with the original. Both versions gave me the error. However, if I use the original jgroups.jar in UDP mode, I can see the JGroupsVersion in jmx-console. Any idea? I do not see any error in cluster.log and server.log. Thanks, Steve ------------------------------------------------------------------------------ Notice: This e-mail message, together with any attachments, contains information of Merck & Co., Inc. (One Merck Drive, Whitehouse Station, New Jersey, USA 08889), and/or its affiliates (which may be known outside the United States as Merck Frosst, Merck Sharp & Dohme or MSD and in Japan, as Banyu - direct contact information for affiliates is available at http://www.merck.com/contact/contacts.html) that may be confidential, proprietary copyrighted and/or legally privileged. It is intended solely for the use of the individual or entity named on this message. If you are not the intended recipient, and have received this message in error, please notify us immediately by reply e-mail and then delete it from your system. ------------------------------------------------------------------------------