Your output states <i> d:\web\esplanade\updatetoplevel.php</i>, this means that the script is situated at the root of the installation (if <i>esplanade</i> is the eZ publish root). This script should be present in the <i>update/common/scripts</i> subdirectory of eZ publish.
Do you know where your script was aquired from? Did you copy the script from the 3.4.1 release into your 3.3.5 site?