I have been trying to install a new server into an existing tree, and I keep getting the above message (failure) during the installation. I have checked the settings and both admin, and admingroup are already LUM enabled, and I cannot find anything wrong with the existing settings. There are already 2 servers in the ring, and I am creating a new server to replace the existing email server.

Any help in this matter would be most appreciated, as I have run out of ideas.