[RESOLVED] Broke backend access on multisite wordpress

this plugin brokes access to wordpress 3.5 Multi site

http://wordpress.org/extend/plugins/custom-tinymce-shortcode-button/

——- Solution —–
http://wordpress.org/support/topic/custom-tinymce-shortcode-button-break-multisite?replies=3

quite simple:
“The solution is to replace:
include(‘settings.php’);
by
include(dirname(__FILE__) . ‘/settings.php’);
in custom-tinymce-shortcode-button.php line 12.”