There are two things that I can see in the in the site you linked that might be causing you problems The first is stated in the answer by Pablo Romeo:
you need to add onclick="code here" in order to send event when the user Clicks the link.
<a class="btn btn-inverse btn-small pull-left" href="http://www.mannachurch.org/online-video-notes/letsmove_questions_pt1.pdf" onclick="ga('send', 'event', 'Questions PDF', 'click');" target="_blank">
The second problem is the location of your Google Analytics tracking code on that page. Its at the bottom of the <body>
tag you should move it so its with in the <head></head>
tags
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-43995008-1', 'mannachurch.org');
ga('send', 'pageview');
</script>