This plugin gives one error after another. There is no reason for me to list them because one only has to view the support forum here. All the errors others are listing, I'm getting. After several hours and a few times recompiling PHP just to get more errors, I've decided this plugin isn't fit for public use. Also the owner hardly every replies with anything helpful. I'm removing the plugin and hopefully I can get my money back from MAXCDN because I only purchased the service after reading about the benefits of it and this broken plugin from the Yoast website.