title: Error in gzfile(file, "rb") - what should I do?
body: <p>I'm going to write shortly, because my english is not perfect.</p>
  <p>My code is:</p>
  <pre><code>explanatory=readRDS(&quot;explanatory_complete.Rds&quot;)
  </code></pre>
  <p>And I want knit pdf or word document, I receive this message:</p>
  <blockquote>
  <pre><code>Error in gzfile(file, &quot;rb&quot;)- can't oppen connection
  </code></pre>
  </blockquote>
  <p>Where is problem? I set the right working directory.</p>