What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Our apologies for this problem. Please try the following to fix it:
a. Logout from your account
b. Clear your browser's cache and cookies
c. Login again
d. Clear your forms cache (http://www.jotform.com/help/229-How-to-Clear-your-Form-Cache)
e. Edit your form and check if you still can't save it.
If you've lost some changes in the form, you can check your form revision history and revert it from there. Here's our guide for that: http://www.jotform.com/help/294-How-to-View-Form-Revision-History.
If this does not resolve the issue, please let us know. I will raise the issue to our back end team so they may take a deeper look.
I haven't had any problems with losing any form changes. It was just popping up at the strangest times and not when trying to save the form manually. If you look at the image I posted you will see in the background the error occured when I was reviewing Email Response settings, not while on the Form itself.
In any case it has not occurred in the last few days so perhaps it has fixed itself.
Thank you for the update. It could be that our servers had a small hip cup. At the moment you were to only person that reported the issue and could be an isolated thing.
If you experience this again, please let us know. We will be glad a deeper look.