After fresh Fedora-Server install and logging in(root) cockpit webUI, cockpit shows blank page with top bar(and on the right drop down menu). Following items from drop down menu display "pop-up" form when clicked, "Display language"(no languages displayed),"About Cockpit","Set Password", rest have no effect. Web UI shows no error messages.

There is an error in log:
[root@ibm-p8-generic-02 ~]# systemctl status cockpit.service 
● cockpit.service - Cockpit Web Server
   Loaded: loaded (/usr/lib/systemd/system/cockpit.service; static; vendor preset: disabled)
   Active: active (running) since Thu 2015-03-26 14:12:35 CET; 40min ago
     Docs: man:cockpit-ws(8)
  Process: 3451 ExecStartPre=/usr/sbin/remotectl certificate --ensure --user=root --group=cockpit-ws (code=exited, status=0/SUCCESS)
 Main PID: 3455 (cockpit-ws)
   CGroup: /system.slice/cockpit.service
           └─3455 /usr/libexec/cockpit-ws

Mar 26 14:13:17 ibm-p8-generic-02 cockpit-ws[3455]: cockpit-session: gssapi auth failed: Invalid token was supplied (Unknown error)
Mar 26 14:13:24 ibm-p8-generic-02 cockpit-ws[3455]: logged in user: root