I'm using the latest version of the plugin and wp 3.3.1.
Regardless of the role assigned to a user, when I try and login with a user name and password, a white page with the text Unauthorized Action appears. I also get a permissions error sometimes.
This happens regardless if I create the user in the admin area or whether the user registers on the site's front end.
I urgently need to resolve this as the site has to be live and functional in less than 24hrs.