This is due to the reply to email has not been established in the database.  Here is how to add an email address to resolve this issue:
  1. Click Launch
  2. Click Applications
  3. Click Forms Manager
  4. Log in
  5. Click Settings
  6. Click Account Designer
  7. Click E-Mail
  8. On the far left sad an email address for the Reply To email address field
  9. Click Save and Close