Topic: Facebook photos widget can't authenticate?

On of my favorite widgets is the facebook photos widget which has worked pretty well since the relaunch.

However, recently it just displays "can't display because your facebook settings have changed".  Looking at, I can't see a way to re-authorize it.  I can remove the widget and re-add it and in that case it allows me to reauthorize it, but it still does not function with the same error.

Can anyone tell me if there is a trick?  Or is this permanently broken?