We currently do not support Nintex New Responsive for SharePoint on-premises.
To see the current developments of Nintex New Responsive for Office365, visit the page below.
As it is not in the current Old Responsive designer, it is on the immediate plans for New Responsive. However, I would like to get this feature into New Responsive as it is a highly requested feature and have added it to the backlog.
Has anyone else notice the below problem with saving the signature file on the form. This error is occurring on any signature control I add to my form.
Sorry for not responding earlier, but I figured out what was the problem. Apparently, you have to have attachments enable on a SharePoint List and also default file upload control associated with the form. Without it causes the error/bug with Nintex Signature.
Was this an older form? We now force the user to ensure they have a default file upload control. I suspect you may have an older form whereby you didn't need to select a default file upload control.