NFS server setup error

I am attempting to set up NFS file sharing between two PCs, each running suse 13.1. Previously, the two PCs were connected with Samba, as one was running Windows XP.

When I attempt to start the NFS Server from Yast (running openSuse 13.1), I receive the following error:

"Unable to start idmapd. Check your domain setting."

"Enable NFSv4" is checked in the configuration panel and the domain is "localdomain."

If I uncheck "Enable NFSv4," I then get the error: "Unable to stop idmapd"

All suggestions welcome. Thanks.