Plugin calls script url that doesn't exist

WP Deferred Javascripts is listing a script url that doesn’t exist. When activated, one of the ‘scripts’ it lists is: http://claritysound.net/wordpress/wordpress/v=1.10.2 – with a version number, but no script. Also, http://claritysound.net/wordpress/wordpress/ does not exist as a directory on this site.

When I deactivate it, the only script listed with that version number is:
<script type='text/javascript' src='http://claritysound.net/wordpress/wp-includes/js/jquery/jquery.js?ver=1.10.2'></script>

So, I assume that’s the one it’s trying to list. Why would it call a directory that doesn’t exist? Any clues on how to fix this?

Thanks.

https://wordpress.org/plugins/wp-deferred-javascripts/