[Plugin: Disqus Comment System] embed code has bugs

When trying the embed code

<script type="text/javascript">
            /* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */
            var disqus_shortname = 'MYNAME'; // required: replace example with your forum shortname

            /* * * DON'T EDIT BELOW THIS LINE * * */
            (function() {
                var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
                dsq.src = 'http://' + disqus_shortname + '.disqus.com/embed.js';
                (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
            })();
        </script>
        <noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
        <a href="http://disqus.com" class="dsq-brlink">comments powered by <span class="logo-disqus">Disqus</span></a>

I get this error:

‘m’ is 0 or no object
line 46
character 215

http://wordpress.org/extend/plugins/disqus-comment-system/