Os X server does not provide file sharing after update to 3.0.1

Hello,

I was using OS X server under 10.8. It was working perfectly for the file sharing. After update to 10.9 and to Server 3.0.1 file sharing is not working. I am able to see the server from client Mac but there is always a "connection failure" message regardles of type of login I am trying. By the way I can see only the server name but not the folders set up for the sharing. I verified acces right but they seem to be OK.

I tried to delete the server software and re-install it (deletion of server.app and folder server in library) but it did not help.

Any hints?

Jurek