I am trying to validate my site with the W3 validation tool.  It is currently giving me an error that is associated with the Disqus plugin. The error reads "end tag for element "script" which is not open

</script></td>"

when I search for this string in my page source it is right underneath the Disqus plugin.  When I disable the plugin, the error goes away.  I can't find where this is entered in the php files.  If someone could give me some inside as to how to fix this, it would be great.