Warning: Missing argument 4 for plgContentJw_disqus::onContentBeforeDisplay() in /home/content/z/e/n/zenmastr/html/plugins/content/jw_disqus/jw_disqus.php on line 32

Warning: array_key_exists() [function.array-key-exists]: The second argument should be either an array or an object in /home/content/z/e/n/zenmastr/html/plugins/content/jw_disqus/jw_disqus.php on line 81

any idea how to fix these?

Could you provide me with a link to your site please?

I have the same problem.  When I go to media manager or andwhere that lists images I get the following error listed against every image.
Warning: Missing argument 4 for plgContentJw_disqus::onContentBeforeDisplay() in /home/neilsbo1/public_html/newsite/plugins/content/jw_disqus/jw_disqus.php on line 32

Solution provided in another link.  See:

forum.joomlaworks.net/disqus-comments-for-joomla-%28package%29/error-message-within-media-manager/