AppleShare IP 6.2: Shared Users and Groups Requires TCP/IP

I installed AppleShare IP 6.2 and I am getting the error message "AppleShare IP Registry could not establish network services to act as a primary users and groups server. Please check your connections." Can you help?
Shared Users and Groups is a new feature in AppleShare IP 6.2. By default, AppleShare IP 6.2 enables the server to be a primary server for sharing users and groups information to other AppleShare IP 6.2 servers that are configured as secondary servers with the same administrator name and password.

Shared Users and Groups requires TCP/IP. If TCP/IP is disabled, you will receive this message when the server is turned on.

If you are receiving this message, make sure TCP/IP is enabled and configured properly. Alternatively, the AppleShare IP 6.2 CD-ROM disc includes an unsupported tool named "Disable Shared Users and Groups" that allows you to prevent the server from acting as a primary Shared Users and Groups server.
Published Date: Feb 18, 2012