parisholley/wordpress-fantastic-elasticsearch — pull request #65 by nielo (2013-09-13 09:28:09+00:00)
Title: Update options.php

missing ! on line 944 causes custom field usage ...

I've submitted a pull request for this in NHPOptions, but it doesn't look like the project is being maintained any longer - apparently Redux Framework is a fork which is under active development: https://github.com/ghost1227/Redux-Framework.