Thank you for this great plugin!
The old version works well with custom post types but the new one doesn't work anymore.
i may suggest you to replace the dropdown select list "Posts, pages, or the whole shebang?", by a more flexible multiple select checkboxes including all registred posts types (pages, posts, customs...), index and archive listing... The WP function get_post_types() may help you to get all registred post types.
I hope you will take this in consideration for your next releases because, since WP 3.0, a lot of people use WP as a real CMS using custom post types.
Thanks and best regards,