I've got 20+ users with Civil 3d 2012 installed from a network deployment that was hosted on a server that is no longer in use. Is there any way to update the client machines with the address or info to a new server that will host the deployment? I think this issue may be preventing me from getting SP 2.1 to install on the client machines.
If it were me, I'd recreate the deployment share identically to the old server, then put a hosts file entry on the client to point the old servername to the new server IP address. The client wouldn't know the difference. Easy.