I'm using WP 3.5.1 and Fast Secure Contact Form 3.1.8. Firebug is showing the following error on the Fast Secure Contact Form Settings page on the Admin side:
ReferenceError: VC_FSCF_set_cookie is not defined
and gives this file path:
/wp-admin/plugins.php?page=si-contact-form/si-contact-form.php
Line 1096
I also see this error in 3.1.7 on WP 3.5.1. I searched but couldn't find anything on this.
Oddly, I'm not getting a PHP error in the wp-admin directory where plugins.php is.