Probably my fault since I installed the wrong patch,. apparently you shouldn’t patch 1.9.1.1 with the patch for 1.7.1 as it duplicates a function in the file Abstract.php
If you are seeing this warning,. Cannot redeclare Mage_Core_Block_Abstract::quoteEscape
You need to edit your /app/code/core/Mage/Core/Block/Abstract.php file and remove the duplicate function the escape quotes, go to line 1205 or so, and you will see it’s duplicated just below.