Breaks one page

The content on a specific page doesn't show up when I activate this plugin. It gets hung up with this error:
GET http://www.knewton.com/wp-content/plugins/google/css/plusone.css?ver=3.1.2 404 (Not Found)
ping:-1Resource interpreted as Image but transferred with MIME type text/html.
ping

Any ideas?

thanks!

Will