Thread:Extension talk:Lingo/Lingo not working - no errors, but no popups!

I've just installed Lingo v0.4 onto a MediaWiki 1.19.2 isntallation, with PHP 5.3.3 and MySQL 5.1.61. I've created a simple Terminology page, via the link on the Special:Version page, with the terms and definitions all on one line, as per several of the suggestions on this discussion page. I've then added the terms to pages in the main section of the Wiki, but I get no popup once the pages are saved.

Other extensions in use are:
 * Confirm User Accounts
 * Renameuser
 * Translate
 * DynamicPageList
 * InputBox
 * PerserFunctions
 * StringFunctions
 * SyntaxHighlight
 * YAMBE Hierarchical Breadcrumb

I've tried enabling debugging, but am not seeing any error messages - it's as if the extension is simply being ignored, although it is definitely showing up on the Special:Version page.

Please note that I've only added the one require_once line to my LocalSettings.php file - I haven't used any of the other customisations.

This looks like an incredibly useful extension which will be great for our users, but it looks like I'll need some help to get it going. Any ideas, please?