Thread:Extension talk:LDAP Authentication/LDAP Authentication w/Groups Causes Blank Page.

I'm having a strange issue with LDAPAuthentication. I have it up and running and connecting to my LDAP server but whenever I try to add a group, the wiki pages are all blank - I don't see anything, not even on the login page.

Particularly, I'm adding the following:

Any ideas on why this might be happening?