If I rub the ldapwhoami, I get
c:\OpenLDAP\ClientTools>ldapwhoami
ldap_connect_to_host: TCP localhost:389
ldap_new_socket: 484
ldap_prepare_socket: 484
ldap_connect_to_host: Trying ::1 389
ldap_pvt_connect: fd: 484 tm: -1 async: 0
attempting to connect:
connect success
ldap_sasl_interactive_bind_s: No such attribute (16)
c:\OpenLDAP\ClientTools>