Enhanced Link Attribution not working with Yoast Google Analytics 4.3.2

I have tried setting up enhanced link attribution using the Yoast Google analytics plugin and entering in a custom line of code as described in this article.

http://support.google.com/analytics/bin/answer.py?hl=en-GB&answer=2558867

Withought the code in-page analytics works fine. but with it it returns the following message.

Problem loading In-Page Analytics
We tried looking for a few common problems with your setup, but couldn’t find what’s wrong. Please try again later.

This is the code loaded in the page header. Any ideas why its not working? I have enabled enhanced link attribution within analytics too.

// Google Analytics for WordPress by Yoast v4.3.2 | http://yoast.com/wordpress/google-analytics/
var _gaq = _gaq || [];
_gaq.push([‘_setAccount’, ‘UA-38678774-1’]);
var pluginUrl = ‘//www.google-analytics.co.uk/plugins/ga/inpage_linkid.js’; _gaq.push([‘_require’, ‘inpage_linkid’, pluginUrl]);
_gaq.push([‘_trackPageview’]);
(function () {
var ga = document.createElement(‘script’);
ga.type = ‘text/javascript’;
ga.async = true;
ga.src = (‘https:’ == document.location.protocol ? ‘https://ssl’ : ‘http://www’) + ‘.google-analytics.com/ga.js’;

var s = document.getElementsByTagName(‘script’)[0];
s.parentNode.insertBefore(ga, s);