title: "(#100) Error finding the requested story" encountered when POSTing like on a post
body: <p>I'm using Graph API to get posts that a user is tagged in, and then issuing a like on the posts by <code>POST</code>ing to <code>[post_id]/likes</code>. However, even though the post obviously exists, because I was able to retrieve the <code>post_id</code>, when issuing the like, the following error is encountered:</p>
  
  <pre><code>(#100) Error finding the requested story
  </code></pre>
  
  <p>I find that this seems to affect only posts with <code>post_id</code> in the format of <code>[user_id]_[post_id]</code>.</p>
  
  <p>Is this a known bug or is there a workaround?</p>