Virtualmin + LDAP Server


So I have managed to setup an OpenLDAP server using the legacy documentation here on the site and Virtualmin seems all set to use it. I can create virtual servers and LDAP users just fine, mail aliases as well. I can even login via FTP and SSH as an LDAP user. However, I cannot login to virtualmin (https://:10000) as the virtual server administrator user. I can only seem to login as root. Does anyone have any ideas on what I should try? Thanks

CentOS 6.5 x64
Virtualmin 4.09 Pro | Webmin 1.690

Jul 21 15:50:58 <hostname) webmin[18423]: Invalid login as <user> from <my_ip>