After installing module I can no longer login to magento on my site.
a:5:{i:0;s:31:"Invalid mode for clean() method";i:1;s:2552:"#0 C:\xampp\htdocs\iphones\app\code\core\Zend\Cache\Backend\File.php(532): Zend_Cache::throwException(’Invalid mode fo...’)
#1 C:\xampp\htdocs\iphones\app\code\core\Zend\Cache\Backend\File.php(538): Zend_Cache_Backend_File->_clean(’C:\xampp\htdocs...’, ‘matchingAnyTag’, Array)
#2 C:\xampp\htdocs\iphones\app\code\core\Zend\Cache\Backend\File.php(279): Zend_Cache_Backend_File->_clean(’C:\xampp\htdocs...’, ‘matchingAnyTag’, Array)
#3 C:\xampp\htdocs\iphones\lib\Zend\Cache\Core.php(452): Zend_Cache_Backend_File->clean(’matchingAnyTag’, Array)
#4 C:\xampp\htdocs\iphones\lib\Varien\Cache\Core.php(100): Zend_Cache_Core->clean(’matchingAnyTag’, Array)
#5 C:\xampp\htdocs\iphones\app\code\core\Mage\Core\Model\Cache.php(374): Varien_Cache_Core->clean(’matchingAnyTag’, Array)
#6 C:\xampp\htdocs\iphones\app\code\core\Mage\Core\Model\App.php(1088): Mage_Core_Model_Cache->clean(Array)
#7 C:\xampp\htdocs\iphones\app\code\core\Mage\Adminhtml\Model\Url.php(155): Mage_Core_Model_App->cleanCache(Array)
#8 C:\xampp\htdocs\iphones\app\code\core\Mage\Admin\Model\Session.php(75): Mage_Adminhtml_Model_Url->renewSecretUrls() …................................................