"OSError: [Errno 22] Invalid argument" on Kobo Sync about calibre-web

[OzzieIsaacs]

Please try to update to the newest nightly version. It should work.
The reason behind it: Calibre-Web trys to detect a "fixed-layout", needed for e.g. comic files in epub format. Your error was an unexpected error in this detection. Find the root cause of it and to deal better with it, it would be of interest for me to have the problematic book (or even better the relevant part of it). After update you should get a message like "Could not parse epub metadata of book xxx". If you could take this book (It's the id calibre-web showing in the link if you open a book), then open the (k)epub file of it with a zipper and send me the container.xml located in the META-INF folder (preferably via email found on my profile page, so nobody else has contact with your private book contents).

[sre3]

Thanks for the quick reply! I'll switch to nightly tomorrow and grab the xml.

[sre3]

Well... Ark will not let me open the epub, saying: Failed to open archive: Zip archive inconsistent

The Calibre epub editor also fails to open the book, saying

  File "calibre/ebooks/oeb/polish/container.py", line 1178, in __init__
  File "calibre/utils/zipfile.py", line 1113, in extractall
  File "calibre/utils/zipfile.py", line 1097, in extract
  File "calibre/utils/zipfile.py", line 1166, in _extract_member
  File "calibre/utils/zipfile.py", line 1035, in open
OSError: [Errno 22] Invalid argument

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "calibre/gui2/tweak_book/job.py", line 33, in run
  File "calibre/gui2/tweak_book/boss.py", line 82, in get_container
  File "calibre/ebooks/oeb/polish/container.py", line 1594, in get_container
  File "calibre/ebooks/oeb/polish/container.py", line 1184, in __init__
  File "calibre/utils/localunzip.py", line 252, in extractall
  File "calibre/utils/localunzip.py", line 234, in _extractall
  File "calibre/utils/localunzip.py", line 177, in copy_compressed_file
ValueError: Invalid ZIP file, local header is damaged

I will close the issue as this seems to be an issue with the file, and not calibre-web. Sync is also now working properly as the error is handled gracefully. Thanks again for the quick fix.