See the first post in this thread to download and install the new version.
Corrected the author_sort bug, text encoding in Edit collection titles, adding sample books to collections. Added additional extensions to ignore. Changed to notes in the report (instead of Warnings) about books that can't be collected due to their cdetype, and added lots of debug output statements to help identify issues if there are problems. Thanks to everyone for reporting issues
Updated first post with information on adding News Feeds, Catalogs, and Periodicals to collections under Common Customizations in Calibre. Feedback welcome...
As usual, if you have any issues, questions, suggestions, please post.