Cant login with Ultimate Facebook

When users try to login/register with Facebook a popup just flashes, and then nothing happens.

I have granted extended permissions.

I’m using a simple child theme to bpdefault and the following components:

Wordpress 3.4.2

bbPress 2.1.2

Buddypress 1.6.1

Multiuser Management 1.1

Google Analyticator 6.2