This documentation page is for Quform version 1 and may not be applicable for Quform 2 click here to visit the documentation for Quform 2.
If you are using Quform 1.3.5 or eariler in WordPress 3.5 or later, you will see the error below error on the dashboard. To fix the problem update the plugin to 1.3.6 or later, see Updating the plugin.
Warning: Missing argument 2 for wpdb::prepare(), called in /home/xxx/xxx/wp-content/plugins/iphorm-form-builder/admin/admin.php on line 2105 and defined in /home/xxx/xxx/wp-includes/wp-db.php on line 990