At line 53 this plugin loads Jquery 1.3 into the WordPress Admin head on some pages. If you notice functions like sortable breaking, it may be due to this. I don't know why this plugin needs to load jquery 1.3 (its working fine after I removed that line), but all my firebug errors in admin went away when i stopped it loading this by removing that line.
I note than in my pre 3.3 wordpress installs the plugin only adds this script to head at the cpt settings page, causing errors there. In Wp 3.3, it is loading jquery 1.3 even on the custom post types pages it has generated, causing issues with the editor and especially any sortable/drag areas.