It was working perfectly and then my hard drive crashed and burned. Sadly, my image backup of the drive was corrupted and I had to reinstall Windows and all my programs.
I reinstalled Calibre and then downloaded the Apprentice Alf DeDRM tool. It shows that it was successfully installed in the plugin page, but when I try to convert a book, I get a pop-up that the book is DRM protected.
I have some library books that will expire soon and be lost unless I can get this working.
Help gratefully sought.