title: Magento Extension Not Installing
body: <p>I am trying to install the <a href="http://www.magentocommerce.com/extension/packages/module/6887/mage_googleshopping#releases" rel="nofollow">Google Content API for Shopping</a> through magento connect in magento 1.5v.But i am getting the error.Any pointers?</p>
  
  <pre><code>CONNECT ERROR: Package 'Mage_Core_Modules' is invalid
  './app/code/core/Mage/Admin/Model/Acl/Assert/Ip.php' already exists
  Package 'Lib_Varien' is invalid
  './lib/Varien/Autoload.php' already exists
  Package 'Lib_Google_Checkout' is invalid
  './lib/googlecheckout/googlecart.php' already exists
  Package 'Lib_Js_Calendar' is invalid
  './js/calendar/calendar-blue.css' already exists
  Package 'Lib_Js_Mage' is invalid
  './js/lib/FABridge.js' already exists
  Package 'Lib_Phpseclib' is invalid
  './lib/phpseclib/Crypt/AES.php' already exists
  Package 'Mage_Locale_en_US' is invalid
  './app/locale/en_US/Mage_AdminNotification.csv' already exists
  Package 'Lib_Mage' is invalid
  './lib/Mage/Archive/Abstract.php' already exists
  Package 'Lib_ZF' is invalid
  './lib/Zend/Acl/Assert/Interface.php' already exists
  Package 'Lib_ZF_Locale' is invalid
  './lib/Zend/Locale/Data/Translation.php' already exists
  </code></pre>