Who took over the book publishing for this software when Creative Memories got closed?
There is another publisher for this application. The publisher is called Panstoria. According to the their website, you can download the application and updates for this using the link posted below.
Download updates: http://www.panstoria.com/download_storybookcreator_update
It's also possible that the software was licensed only for them, but you can use the following contact information to obtain additional details.
Contact page: http://www.panstoria.com/contact.html