The plugin broke my site..
I had the following error in WordPress admin in a box at the lower right.
"Call to undefined method WP_Error::get_items().."
I googled this and found that a number of people have had the same error and posted a request to the author for help. As far as I can tell no-one has had any response.
Yoast. You rock and I'm using your excellent SEO plugin on the same site. Still, what gives with the unanswered fatal site breaking bug?