Quote:
Originally Posted by Mixx
Can I please reopen this thread? In my case, regrettably, there is no *.db file. I just have a bunch of author_title.zip files with
book.html
book.jpg
book.opl
book.txt
mbp_toc.html
for each book, but put into a subdirectory called "title" in the ZIP file. When I import the ZIP file, the metadata are read properly, the cover is not loaded though and the format of the book is "ZIP". But when I try to read it or convert it, I get an error :TypeError: Invalid input object: NoneType
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Try unzipping all the files, each file into it's own subdirectory (7zip allows that for multiple ZIPs with one click, don't know about other programs). Then, in Calibre, in the add books dropdown, select the option "subdirectories, one book per directory, multiple formats". If I'm not much mistaken, that ought to do it.