Alternative, using error catching:
<div class="dwnldBtn"><a onclick="
try{ga('send', 'event', 'Downloads', 'Minion-Win', { 'hitCallback': function() { document.location = 'http://cdn.mmoui.com/minion/Minion2.0.11b-beta.exe'; }}); return false;
}catch(e){}" href="http://cdn.mmoui.com/minion/Minion2.0.11b-beta.exe"></a></div>