Hi, when I have the plugin on I get an error as some files are missing in the tinymce directory:
"NetworkError: 404 Not found - http://www.enriquearellanofarias.com/test/wp-includes/js/tinymce/langs/en.js?ver=358-23156"
"NetworkError: 404 Not found - http://www.enriquearellanofarias.com/test/wp-includes/js/tinymce/themes/advanced/langs/en.js?ver=358-23156"
Looks like they don't exist in wordpress 3.5, so I guess the plugin is not compatible yet...
All the best,