Thread:Extension talk:LDAP Authentication/Undefined Index: ws Domain error?

Hi Im having problems with the Ldap login feature on my Wiki, it was working fine but now when i try to login with correct details it and try to go into the special pages it keeps saying "You must be logged in to access this page directly." Anyone know why this error of Undefined Index: ws Domain error is being shown at the top of the page? Is this something to do with my Ldap Plugin?