If you're receiving the error page after submitting the form, it means that one or more of the field validations were not succesful. If all the fields are filled correctly, you should check:

- Check in the HTML form that field names don't contain spaces.

- Is your validation set correctly? Sometimes the validation settings for a field are incorrect. Use the message or embed method for the error landing page to determine which  field is causing the error.

- The field values are not correctly transfered to the script. This can be caused by an incorrect form action or enctype. Check this article of the knowledge base related to file uploads:

- Check the form method: GET or POST, must be the same in the form and the script. Also, if you're using a version of Forms To Go 2.x and older, you should be aware of this situation with PHP scripts.