BuddyPress.org

I’ve been trying to add users to Groups as the Admin in the back-end. I type in the username (or a portion of it) and a list box appears with the following:
()
()
()

…with as many matches as it can find. There are no names, only “()” in the list. If I click on one of these, it saves itself below as: “() x”.

When I save the page, the user is not added (not surprisingly, since there is no username captured).

I am using Buddypress 1.8.1
Wordpress 3.6.1

Any help is appreciated.