Form name can NOT be empty!

The title is the error message!
I used the version 4 of chronoform for joomla 3.4.1 and today the component didn´t work in the backend anymore.
So i installed the version 5 and import my backuped forms vie restore forms.
Now all of my imported forms didn´t work,
the test view didn´t work
the menü link form didn´t work

and i have no idear what is the solution

the website is http://www.stadl-kreuzfahrt.de

regards

Hello chevron08,
I'm not a Chrono professional, but after checking your new post, I think that the following links may help:
How to post information from a Chronoform to ZoHo
How can I pass form data to another site?
What are the 'Easy Form' and 'Form' Wizards?
How can I add a mask to format a form input?
How can I ask new users for information and not ask logged in users?
How can I automatically copy fields from one part of my form to another?
P.S: I'm just an automated service😉

Hi chevron08,

The backup and restore between CFv4 and CFv5 is experimental and limited. All that is restored is the Form HTML and that is of limited use.

If you have been using CFv4 on your site you can continue to do that.

What exactly doesn't work in the back-end now?

What have you or your web-host changed that might stop it working?

Bob