TypeError: editor.create_form is not a function

[designsimply]

Turning on the "Edit all post fields at once" option causes the editor to break.

Steps to reproduce:

1. Open a new WP 3.5.1 install and add/activate the Front-end Editor plugin
2. Enable SCRIPT_DEBUG in wp-config.php
3. Go to wp-admin > Settings > Front-end Editor
4. Check the "Edit all post fields at once." option
5. Click the "Save Changes" button
6. Try editing any post from the front end

• Expected: clicking "Edit" will enable the editor for all post field
• Actual: clicking "Edit" does not open the editor and the following error can be found in the web console

Error: "TypeError: editor.create_form is not a function @ http://localhost/3.5.1/wp-content/plugins/front-end-editor/build/editor.js?ver=2.3:854"

Code ref: http://plugins.trac.wordpress.org/browser/front-end-editor/tags/2.3/build/editor.js#L854

Tested with WP 3.5.1 and Front-end Editor 2.3 using the Twenty Twelve theme and Firefox 22 on Mac OS X 10.8.3.

[scribu]

Confirmed using rev 805dc4dc72b7595cd19e2015b9da3324e8fb9b98

In Chrome, the error looks like this:

Uncaught TypeError: Object #<thumbnail> has no method 'create_form'