Currently working

Plugin is currently working with WordPress 3.9.1 and Gravity Forms 1.8.4.

You will need to ammend the plugin using the steps below.

What you also need to know is:
* data is saved as the user goes from one page to another in an multi-page form.
* the user can log off, go to another browser, come back at another point in time and access their incomplete form by logging in and returning to the form.
* the submitted data does not appear in the backend until the user has completed the form.

Necessary changes
Open the plugin file and look in line 134 for:
add_action(“gform_editor_js”, “editor_script_persistency”);

Change to
add_action(“gform_advanced_settings”, “editor_script_persistency”);