[Koha] LDAP: Staff login when Authenticating

Hello, We finally have Koha working correctly, authenticating to an LDAP server. The problem we have now is that when LDAP is switched on the "Kohaadmin" staff user gets the following error when we try to log in: "Error: Unauthorized user click to logout". The patrons can log in to OPAC fine but not the staff users. I did try auto creating an LDAP user then switching off LDAP, logging is as the Kohaadmin and assigning that newly created LDAP user Staff Rights, then switching LDAP back on, but the same error occurs. Any suggestions? Thanks Barry