Enhanced User Interface (Chosen) doesn't work for me

I don't see the chzn class in the source of the page, and I don't see the chosen.js script being included. Do you have the "Enable enhanced interface" check box checked right now for this form?

You have a couple things going on. What theme was used as a base for this custom theme?

1. Your theme is including jQuery 1.7.2. WordPress 3.5 should be including jQuery 1.8.3 and that's what Gravity Forms relies on. Please let WordPress do its job and enqueue the proper version of jQuery.

2. Your theme is including a bunch of extra, incorrect markup in the gravityform shortcode output. If you check the source of the page, you will find near the gform_body, gform_footer and gform_wrapper, all sorts of closing < p > and < br > tags. That is being done by something in your installation, normally the inclusion of the [raw] shortcode. You can read more about it here. http://www.gravityhelp.com/forums/tags/raw

The quick fix is, in the editor where you embedded the form, surround the [gravityforms] shortcode with [raw] [/raw] tags. That normally works around the problem of the extra markup being added by the theme (or sometimes a plugin.)

Check your form in the form preview. If the enhanced interface works there, you can be sure it is a theme or plugin conflict which is causing the problem. You can find out exactly where the problem is coming from by using these instructions to test for theme and plugin conflicts http://rkt.gs/testing