thanks for reporting! Sadly I have zero experience with LDAP but just noticed I cannot see any attachment you mentioned. Did you forgot to attach it or is it another bug?
BTW: in case you did not know, chances are it can be catched by some other developers and fixed if you report the bug here: https://dev.tiki.org/report+a+bug
PS: perhaps this thread might help you? ⇒ https://tiki.org/forumthread42893