the PHP form that you have created isn't linking properly. Please check the name and the location of the .php file.
Visit http://my-site.com/scripts/form_check.php in a web browser and make sure you see all green checkmarks. If some items do not display green checkmarks that means that the hosting server is not configured correctly to allow the Form widgets to send email messages to the address you've specified.
Contact your web-hosting provider about the server configuration problem. Describe the items that are not marked as green in the form check page, so that they can help you set up the servers to use the correct settings.
Thanks for the reply.
I called the web hosting provider and a member of staff there was kind enough to fix the problem for me.
He said that there was an issue with the .htaccess file and it had to be renamed. I'm not entirely sure why.
Anyway all is well with the world again.