Alert on sever 10.10 -The volume "Setup" is not responding

Added a Apple TV a few days ago, and while setting it up in the front room, my wife was on her mac book pro ...

She said I was controlling her Mac book while entering information into the Apple TV

The mac book had a dialogue which asked if I want to access the TV click yes and when back to setting up the Apple TV

Now I'm seeing the devices under GO>Network> to devices on the local network

What I seeing is the wife's mac book listed six times mac book2, mac book3, etc to (6)

Just took a look at the 10.10 server which I use only for application and file sharing, and found this alert, with no instructions to resolve

"The volume "Setup" is not responding"

Summary

The volume "Setup" is no longer accessible. Loss of this volume may affect services or applications on the server.

All so I now have 89 clients, instead of 3

Haven't a clue on how to correct ... I don't have the server software disk to reload the server software

And have never had a problem like this before