title: What is this error: File does not exist error with roxygenise?
body: <p>I have been using <code>roxygen2::roxygenise</code> quite successfully with my package to build exported and imported functions. However, I recently ran into this error which I am unable to resolve:</p>
  
  <pre><code>&gt; roxygen2::roxygenise()
  First time using roxygen2. Upgrading automatically...
  Error: File file does not exist
  </code></pre>
  
  <p>This is not the first time I have used <code>roxygen2</code> with this package. In addition, I am not quite sure what "File file does not exist" means. Has anyone else seen this and been able to resolve it?</p>