title: WordPress shows I have 1 plugin update, when all plugins are already updated
body: <p>WordPress shows that I have 1 plugin update, when all of my plugins are updated. Below is a screenshot so you can see what I'm talking about:</p>
  <p><a href="https://i.stack.imgur.com/im5Lp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/im5Lp.png" alt="" /></a></p>
  <p>Now, I've tried several things, including reinstalling WP, and deleting the transients using <a href="http://wordpress.org/plugins/artiss-transient-cleaner/" rel="nofollow noreferrer">Artiss Transient Cleaner</a>, yet nothing seems to work. Any ideas on what could possibly be causing this rogue/ghost &quot;plugin&quot; to be requesting an update when there is none?</p>