there is only a difference between the versions and the location has changed, if you want to use custom attributes, you can change the following file to the newest version of jQuery UI CSS
../oc-content/plugins/custom_attributes/index.php
Line: ~385 AND ~395
Change:
echo '<link href="' . osc_base_url(false) . 'oc-includes/osclass/gui/css/jquery-ui/jquery-ui-1.8.20.custom.css" rel="stylesheet" type="text/css">' . PHP_EOL;
To:
echo '<link href="' . osc_base_url(false) . 'oc-includes/osclass/gui/js/jquery-ui/jquery-ui-1.10.2.custom.min.css" rel="stylesheet" type="text/css">' . PHP_EOL;