Form Processor Pro

I am using formprocessorpro.php version 4.1 to collect webform data. I setup the captcha to get rid of the spam, but no captcha text is in the box. However, the background image shows up.

I embedded another captcha image from a different site and the captcha image works. Does wordpress disable the captcha image by default?

Does anyone know a workaround or a solution for this. You can view the form at http://www.michigan-divorce-lawyer.com

Thanks.