Infinite SEO not installing properly after deactivating and updating

Hi, I deactivated this plugin while looking into a performance problem (see recent support question), and saw that you updated it yesterday, so I grabbed the new version and activated it again. However, this time around, I'm not seeing any settings for the plugin nor is there any extra fields in the post editor page. Adding define( 'WDS_SITEWIDE', false ); to my config file makes no difference.

Thanks.