E-book viewer: Error -could not open

Sensahat · 11-10-2014, 03:54 PM

Hi

Not a native English speaker so i'll do my best.

Today almost each time I tried to open a book on Calibre, I got this message:

calibre, version 2.9.0
ERROR: Could not open ebook: Error -3 while decompressing: invalid stored block lengths

Traceback (most recent call last):
File "site-packages\calibre\gui2\viewer\main.py", line 37, in run
File "threading.py", line 763, in run
File "site-packages\calibre\ebooks\oeb\iterator\book.py", line 99, in __enter__
File "site-packages\calibre\customize\conversion.py", line 241, in __call__
File "site-packages\calibre\ebooks\conversion\plugins\epub_in put.py", line 197, in convert
File "site-packages\calibre\utils\localunzip.py", line 223, in extractall
File "site-packages\calibre\utils\localunzip.py", line 205, in _extractall
File "site-packages\calibre\utils\localunzip.py", line 158, in copy_compressed_file
error: Error -3 while decompressing: invalid stored block lengths

OR this one:

calibre, version 2.9.0
ERROR: Could not open ebook: Not a ZIP file

Traceback (most recent call last):
File "site-packages\calibre\gui2\viewer\main.py", line 37, in run
File "threading.py", line 763, in run
File "site-packages\calibre\ebooks\oeb\iterator\book.py", line 99, in __enter__
File "site-packages\calibre\customize\conversion.py", line 241, in __call__
File "site-packages\calibre\ebooks\conversion\plugins\epub_in put.py", line 197, in convert
File "site-packages\calibre\utils\localunzip.py", line 223, in extractall
File "site-packages\calibre\utils\localunzip.py", line 210, in _extractall
ValueError: Not a ZIP file

The books aren't zip files and weren't unzipped, I changed the calibre settings back to default...

I'm kind of lost so any help would really really be appreciated.
Thanks !

BetterRed · 11-10-2014, 04:27 PM

@Sensahat - From EPUB - Wikipedia

Quote:

An EPUB file is a group of files that conform to the OPS/OPF standards and are wrapped in a ZIP file.[3] The OCF [standard] specifies how to organize these files in the ZIP, and defines two additional files that must be included....

1. You should ask the bookseller for a valid EPUB or for a refund.

2. You could try unpacking the files with something like WinRAR or 7zip, if you can do that then repack folder as a ZIP and rename it to EPUB.

BR

theducks · 11-10-2014, 04:28 PM

EPUBS are really a zip file (just with extra rules)

Those messages say DAMAGED files.

A rogue A/V?
Damaged Calibre? Uninstall, then install from a fresh download.

Sensahat · 11-10-2014, 05:09 PM

I deleted each file that wasn't working from Calibre then re-uploaded, checked it, and so on. Took me a while but I guess something went wrong during the first upload to Calibre.

Thank you for your quick answers.
(I also re-installed Calibre)

11-10-2014, 03:54 PM	#1
Sensahat Junior Member Posts: 4 Karma: 10 Join Date: Nov 2013 Device: Kobo Glo	E-book viewer: Error -could not open Hi Not a native English speaker so i'll do my best. Today almost each time I tried to open a book on Calibre, I got this message: calibre, version 2.9.0 ERROR: Could not open ebook: Error -3 while decompressing: invalid stored block lengths Traceback (most recent call last): File "site-packages\calibre\gui2\viewer\main.py", line 37, in run File "threading.py", line 763, in run File "site-packages\calibre\ebooks\oeb\iterator\book.py", line 99, in __enter__ File "site-packages\calibre\customize\conversion.py", line 241, in __call__ File "site-packages\calibre\ebooks\conversion\plugins\epub_in put.py", line 197, in convert File "site-packages\calibre\utils\localunzip.py", line 223, in extractall File "site-packages\calibre\utils\localunzip.py", line 205, in _extractall File "site-packages\calibre\utils\localunzip.py", line 158, in copy_compressed_file error: Error -3 while decompressing: invalid stored block lengths OR this one: calibre, version 2.9.0 ERROR: Could not open ebook: Not a ZIP file Traceback (most recent call last): File "site-packages\calibre\gui2\viewer\main.py", line 37, in run File "threading.py", line 763, in run File "site-packages\calibre\ebooks\oeb\iterator\book.py", line 99, in __enter__ File "site-packages\calibre\customize\conversion.py", line 241, in __call__ File "site-packages\calibre\ebooks\conversion\plugins\epub_in put.py", line 197, in convert File "site-packages\calibre\utils\localunzip.py", line 223, in extractall File "site-packages\calibre\utils\localunzip.py", line 210, in _extractall ValueError: Not a ZIP file The books aren't zip files and weren't unzipped, I changed the calibre settings back to default... I'm kind of lost so any help would really really be appreciated. Thanks !

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11-10-2014, 04:28 PM	#3
theducks Well trained by Cats Posts: 31,267 Karma: 61916422 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	EPUBS are really a zip file (just with extra rules) Those messages say DAMAGED files. A rogue A/V? Damaged Calibre? Uninstall, then install from a fresh download.

11-10-2014, 05:09 PM	#4
Sensahat Junior Member Posts: 4 Karma: 10 Join Date: Nov 2013 Device: Kobo Glo	I deleted each file that wasn't working from Calibre then re-uploaded, checked it, and so on. Took me a while but I guess something went wrong during the first upload to Calibre. Thank you for your quick answers. (I also re-installed Calibre)