}
}
-$writableFolders = array('cache', 'db');
+$writableFolders = array('cache', 'db', 'inc/3rdparty/htmlpurifier/HTMLPurifier/DefinitionCache/Serializer');
foreach ($writableFolders as $folder) {
if (! is_writable($folder)) {
die('The directory "' . $folder . '" must be writeable by your web server user');