title: Absolute path information is required error
body: <p>Here is my code:</p>
  
  <pre><code>FtpConnection ftp = new FtpConnection(ConfigurationManager.AppSettings["server"], ConfigurationManager.AppSettings["user"], ConfigurationManager.AppSettings["password"]);
  ftp.Open();
  ftp.Login();
  FtpFileInfo[] files = null;
  if (ftp.DirectoryExists(some_name))
  {
      ftp.SetCurrentDirectory(some_name);
      files = ftp.GetFiles("*.xlsx");
      string fileName = files[0].Name;
  }
  return;
  </code></pre>
  
  <p>Everything works well. The fileName variable has the correct name.
  However I get error code 500 even though nothing crashed. The error says: Absolute path information is required.</p>
  
  <p>What does this mean? How to fix it?</p>
  
  <p>When I debugged I noticed that when I expand the properties of files, there is one property Exists, which has the exact same error.</p>