Why have my email notifications for one of my forms started arriving with no info?

Three customers have filled out one of my forms today and each time, the email notification that is sent to me (and one of my colleagues) has no info in it. It arrives as a blank message. I'm uploading a sample that shows how notifications used to arrive (top) and how they are arriving today (bottom). Please advise ASAP so I can resolve this during a time of heavier usage.

We had an issue with Text based emails showing up empty.  For any form that is showing empty emails,  edit the form, then open the form once again with the old UI using this URL

http://jotform.com/?old

Once the form has reloaded, open your email notification, copy the text, remove the old text and then paste it back.  Save the notification and it should work once again.  Essentially, Text based emails need to be recreated using the old UI or by reverting the form back to a previously saved state.

http://www.jotform.com/help/294-How-to-View-Form-Revision-History