There was a post about this same exact issue in October of last year, however, there was no sort of resolution posted. Has anyone else seen this message when installing SLES 10 SP1 w/ OES2. When I enter the existing tree information at the eDirectory configuration, I receive the following message:

Tree names do not match
At the address specified the "" tree responded.
The name of the tree that you requested to join is: (MY TREE NAME)

We have two trees, but I have installed other SLES 10 servers in this tree before with no problems. The IP address I am adding for the server with a replica is correct and I am able to authenticate to this tree/server just fine.