Calibre and metadata

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1

Greetings

I use Calibre as library manager. The folder with the books and the data base is encrypted with Cryptomator because I have a backup copy in pCloud. I prepared a vault with Cryptomator and selected a fixed a unity (B, in my case). I opened Calibre and I created a library and added some books. When I need open Calibre, first I open the Cryptomator vault and afterwards I open Calibre. There is no problem if I want to reed a book. But I can’t change metadata like title or author and I can’t erase a book. This is the error message:

calibre, version 3.33.1
ERROR: Excepción no considerada: error:(2, ‘CreateFileW’, ‘El sistema no puede encontrar el archivo especificado.’) [system can’t find the file]

calibre 3.33.1 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.17134-SP0 Windows (‘64bit’, ‘WindowsPE’)
(‘Windows’, ‘10’, ‘10.0.17134’)
Python 2.7.12+
Windows: (‘10’, ‘10.0.17134’, ‘SP0’, u’Multiprocessor Free’)
Interface language: es
Successfully initialized third party plugins
Traceback (most recent call last):
File “site-packages\calibre\gui2\metadata\single.py”, line 631, in accept
File “site-packages\calibre\gui2\metadata\single.py”, line 606, in apply_changes
File “site-packages\calibre\gui2\metadata\basic_widgets.py”, line 225, in commit
File “site-packages\calibre\db\legacy.py”, line 824, in func
File “site-packages\calibre\db\cache.py”, line 63, in call_func_with_lock
File “site-packages\calibre\db\cache.py”, line 1073, in set_field
File “site-packages\calibre\db\backend.py”, line 1488, in windows_check_if_files_in_use
File “site-packages\calibre\utils\filenames.py”, line 382, in init
error: (2, ‘CreateFileW’, ‘El sistema no puede encontrar el archivo especificado.’)

But I can add labels.

I have copied the content of the vault in another folder outside of Cryptomator and the problem disappears.

Thank you very much

Thank you

2

Hi.
Cryptomator handles vaults as network drive.
According to the calibre documentation their answer to this configration ist:

Source: Frequently Asked Questions — calibre 7.4.0 documentation

3

Understood. I have just learned a new thing.
Thank you very much.

4

AFAICT this is due to the Cryptomator drive being case sensitive under the hood and Calibre relies on it on Windows (calling toLower() on the filename, IIRC).
Had a discussion with the author and he “refuses” to change this. So, yes, don’t put your library in Cryptomator (or don’t change metadata).