Thread:Extension talk:LDAP Authentication/Notice: Undefined index: wsDomain in $IP\extensions\LdapAuthentication\LdapAuthentication.php on line 663, 667, 449, 454 and 455

My MediaWiki is 1.18 version and the LdapAutentication version is 1.2d. Everytime a user login in the wiki it get that error. But can login anyway. If the browser isn't closed, the error won't show again, even if he logout and login again. My Settings are just like this:

Can you help me? thank you in advance