[Plugin: Custom Category Post order] Plugin stopped working

I’m not sure when exactly the plugin stopped working, but it looks like it was just after the update to WP 3.4.1 (just went to arrange the post order and had noticed the problem in the Admin area).

The Admin post area doesn’t have the draggable interface any more. Any suggestions?

http://wordpress.org/extend/plugins/custom-post-order-category/