title: Trying to update gantry package, get this error
body: <p>I am following instructions elsewhere to upgrade Joomla from 2.5.x to 2.5.28 in preparation to upgrade to 3.5. </p>
  
  <p>The install, and DB steps went fine. 2 package updates were fine, but when I try to do Gantry to 4.1.33, whether through update or install, it throws this error:</p>
  
  <pre><code>Fatal error: Call to undefined method JInstallerPackage::getManifest() in /home1/someuser/public_html/joomlatest/tmp/install_599de020ec6ed/install.php on line 75
  </code></pre>
  
  <p>Any suggestions?
  Thanks
  JimR</p>