Fatal error: Uncaught Error: Call to a member function isAdmin() on string in /domains/driftworks.com/http/app/code/core/Mage/Core/Model/Design/Package.php:847 Stack trace: #0 /domains/driftworks.com/http/app/code/core/Mage/Core/Model/Design/Package.php(825): Mage_Core_Model_Design_Package->_prepareUrl('../images/drift...') #1 [internal function]: Mage_Core_Model_Design_Package->_cssMergerUrlCallback(Array) #2 /domains/driftworks.com/http/app/code/core/Mage/Core/Model/Design/Package.php(785): preg_replace_callback('/url\\(\\s*(?!dat...', Array, '/**\n * Magento\n...') #3 /domains/driftworks.com/http/app/code/local/Mage/Core/Helper/Data.php(748): Mage_Core_Model_Design_Package->beforeMergeCss('/domains/driftw...', '/**\n * Magento\n...') #4 /domains/driftworks.com/http/app/code/core/Mage/Core/Model/Design/Package.php(726): Mage_Core_Helper_Data->mergeFiles(Array, '/domains/driftw...', false, Array, Array) #5 /domains/driftworks.com/http/app/code/core/Mage/Core/Model/Design/Package.php(677): Mage_Core_Model_Design_Package-> in /domains/driftworks.com/http/app/code/core/Mage/Core/Model/Design/Package.php on line 847