I'm trying to enable post-thumbnails, or rather featured images as they seemed to be updated to, for all my posts and custom post types. I'm using the code from: http://markjaquith.wordpress.com/2009/12/23/new-in-wordpress-2-9-post-thumbnail-images/ , and that works to let them show up in regular post write screens, but the custom post types write panels don't have the featured image on it. I have the custom post types supporting "thumbnail". But it's a no go. Has the code changed to a new phrase for supporting the now "Featured Image"?