Comment 8 for bug 1408406

I haven't tried the latest version yet, but can it be that it solved the issue of not being able to open epub books from Apple iBooks?

Here the release notes excerpt:

"Edit Book: Allow editing an unzipped EPUB (a folder) as a book
Useful if you wish to store your ebook in a version control system and edit it directly with the calibre ebook editor (File->Open folder as book)"