[Nsomniak6]

Hi, I just updated my Calibre to the latest version from Calibre4 and updated all of my plugins, and tried to open the Anthologies that I merged from chapters and books of series from AO3. I can't open many of those that have been merged but some seem fine. The actual book series I've merged are fine but I have no clue what is wrong with the FFs that won't open. I have successfully downloaded new FFs from AO3 and merged them and they open fine.

Thanks in advance

This is the details of one of the books that won't open:

calibre, version 6.8.0
ERROR: Loading book failed: Failed to open the book at D:\Calibre3\not_poignant\Spoils Anthology (7604)\Spoils Anthology - not_poignant.epub. Click "Show details" for more info.

Failed to convert book: D:\Calibre3\not_poignant\Spoils Anthology (7604)\Spoils Anthology - not_poignant.epub with error:
Failed to initialize plugin: 'C:\\Users\\nsomn\\AppData\\Roaming\\calibre\\plug ins\\Goodreads More Tags.zip'
Failed to initialize plugin: 'C:\\Users\\nsomn\\AppData\\Roaming\\calibre\\plug ins\\Read MP3 AudioBook metadata.zip'
Traceback (most recent call last):
File "calibre\ebooks\metadata\epub.py", line 160, in get_zip_reader
File "calibre\utils\zipfile.py", line 774, in __init__
File "calibre\utils\zipfile.py", line 809, in _GetContents
File "calibre\utils\zipfile.py", line 824, in _RealGetContents
calibre.utils.zipfile.BadZipfile: File is not a zip file

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\customize\ui.py", line 435, in get_file_type_metadata
File "calibre\customize\builtins.py", line 175, in get_metadata
File "calibre\ebooks\metadata\epub.py", line 237, in get_quick_metadata
File "calibre\ebooks\metadata\epub.py", line 216, in get_metadata
File "calibre\ebooks\metadata\epub.py", line 163, in get_zip_reader
File "calibre\utils\localunzip.py", line 263, in __init__
File "calibre\utils\localunzip.py", line 239, in _extractall
ValueError: Not a ZIP file
DeDRM v10.0.3: Trying to decrypt Spoils Anthology - not_poignant.epub
DeDRM v10.0.3: Verifying zip archive integrity
DeDRM v10.0.3: Error 'File is not a zip file' when checking zip archive
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
File "calibre\customize\ui.py", line 178, in _run_filetype_plugins
File "calibre_plugins.dedrm.__init__", line 1067, in run
File "calibre_plugins.dedrm.__init__", line 329, in ePubDecrypt
File "C:\Users\nsomn\AppData\Roaming\calibre\plugins\De DRM.zip\zipfix.py", line 70, in __init__
File "C:\Users\nsomn\AppData\Roaming\calibre\plugins\De DRM.zip\zipfilerugged.py", line 685, in __init__
File "C:\Users\nsomn\AppData\Roaming\calibre\plugins\De DRM.zip\zipfilerugged.py", line 711, in _GetContents
File "C:\Users\nsomn\AppData\Roaming\calibre\plugins\De DRM.zip\zipfilerugged.py", line 723, in _RealGetContents
zipfilerugged.BadZipfile: File is not a zip file
InputFormatPlugin: EPUB Input running
on D:\Calibre3\not_poignant\Spoils Anthology (7604)\Spoils Anthology - not_poignant.epub
EPUB appears to be invalid ZIP file, trying a more forgiving ZIP parser
Failed to run pipe worker with command: from calibre.srv.render_book import viewer_main; viewer_main()
Traceback (most recent call last):
File "calibre\ebooks\conversion\plugins\epub_input. py", line 259, in convert
File "calibre\utils\zipfile.py", line 774, in __init__
File "calibre\utils\zipfile.py", line 809, in _GetContents
File "calibre\utils\zipfile.py", line 824, in _RealGetContents
calibre.utils.zipfile.BadZipfile: File is not a zip file

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "runpy.py", line 196, in _run_module_as_main
File "runpy.py", line 86, in _run_code
File "site.py", line 82, in <module>
File "site.py", line 77, in main
File "site.py", line 49, in run_entry_point
File "calibre\utils\ipc\worker.py", line 196, in main
File "<string>", line 1, in <module>
File "calibre\srv\render_book.py", line 821, in viewer_main
File "calibre\srv\render_book.py", line 812, in render_for_viewer
File "calibre\srv\render_book.py", line 789, in render
File "calibre\ebooks\oeb\iterator\book.py", line 62, in extract_book
File "calibre\customize\conversion.py", line 242, in __call__
File "calibre\ebooks\conversion\plugins\epub_input. py", line 266, in convert
File "calibre\utils\localunzip.py", line 252, in extractall
File "calibre\utils\localunzip.py", line 239, in _extractall
ValueError: Not a ZIP file