@anima9 and tlaw259
I’ve been getting the same error as you the both of you (the visual editor tab is disabled when editing or creating new post and only allows text/HTML mode) when I troubleshoot through the browser…it’s not just when I use Google Chrome, but Opera, Firefox and Safari (I’m on a Mac desktop for all my production)
When I disable the plugin the issue goes away. So the plugin is the culprit. Just hope we hear soon from the author about a fix. I love the plugin for my curation task and the SEO feature is handy; I don’t want to go to a similar plugin or handle everything manually but will if I need to.