linuxconf not working

After updating s/w and bug fixes Im having problem running in Linuxconf. Get the following error when running on terminal mode.
Error message from remadmin:
Xlib: connection to “0:0” refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key
Xlib: Gtk-WARNING **: cannot open display: :0

Im running RedHat 7 and using GNOME and I can login w/o a problem.

Please can some one shine some light as to what is causing this.

Thanks

Chuckie