I was having the same troubles, this is what I did to get it to work:
host: omnidc08.corp.omniamerican.org
Base DN: DC="corp",DC="omniamerican",DC="org"
Administrator DN:CN="Chalkley, Jeff",OU="IT Operations",OU="Information Technology",OU="Back Office",DC="corp",DC="omniamerican",DC="org"