I've succesfully installed this plugin. I'm site admin/owner WP 3.8.1
When navigating to the plugin settings it says:
NL Je hebt onvoldoende rechten voor toegang van deze pagina.
EN You do not have sufficient permissions to access this page
I've switched the config to en-US but that doesn't help.
Is there something specific I have to add in the user role when using this plugin?