Ditto, but in my case, the message is reporting 1555 characters of unexpected content.
The result on the website seems to be two-fold:
* the site displays a line of question marks (?) across the top of the page when the plugin is activated
* I’m unable to locate anywhere on the WordPress dashboard to enable any set up for the plugin
I’ve uploaded version 2.0.03 of the plugin onto WordPress 3.3.2