I get an error when trying to autopost to FB

When I publish a post I get an error when I'm trying to autopost to FB.

the error log says:
OAuthException: (#200) The user hasn't authorized the application to perform this action

In the settings, the "Grant extended permissions" page just has a looping AJAX loader... not sure if this is related. I am able to "like" and "send" from the post once it's published. So some kind of connection has been made...

I'm not sure where to go from here

Is there a certain FB setting that is needed in order for autopost to work?

WPMS 3.3.1