I'm getting an error message when I try to submit a form I created.

If you get an error message such as "There was a problem sending your form information. Please try again." when trying to submit a form on your site, it is most likely because you have a field in your form named "Email" and you are not entering in a valid email address before submitting.  Try entering a valid email address in that field and submit the form again.  If the error recurs, check the form name in the Form Properties box as well as all of your form field names to be sure there are no spaces or special characters in them.