Warning: include(Zend/Log.php) [function.include]: failed to open stream: No such file or directory in /home/towerdev/public_html/magento/lib/Varien/Autoload.php on line 94

Warning: include(Zend/Log.php) [function.include]: failed to open stream: No such file or directory in /home/towerdev/public_html/magento/lib/Varien/Autoload.php on line 94

Warning: include() [function.include]: Failed opening 'Zend/Log.php' for inclusion (include_path='/home/towerdev/public_html/magento/app/code/local:/home/towerdev/public_html/magento/app/code/community:/home/towerdev/public_html/magento/app/code/core:/home/towerdev/public_html/magento/lib:.:/opt/alt/php53/usr/share/pear:/opt/alt/php53/usr/share/php') in /home/towerdev/public_html/magento/lib/Varien/Autoload.php on line 94

Fatal error: Class 'Zend_Log' not found in /home/towerdev/public_html/magento/app/code/core/Mage/Core/functions.php on line 247