After upgrading a bunch of WordPress plugins on a site I noticed that comments were not functional on my site for users that were not logged in. This can always be tricky because if someone reports comments not working to the WordPress site administrator they likely will be logged in when they test the comments and think there is nothing wrong. Anyhow if comments are throwing an error and you have the SI Captcha Anti-SPAM WordPress plugin installed then the below content will assist you to resolve the problem.
After upgrading the Fast Secure Contact Form plugin for WordPress you should definitely test to make sure things are working properly because you likely will receive an error when submitting the contact form if you are using the built in captcha. The error which is explained in more detail complains of not being able to read a token file. Below we describe how to quickly resolve the Fast Secure Contact Form captcha error.