[Ron53]

It is - after an brandnew installation on a brand new PC - still absolute not possible to add a book into the calibre database.
I have tried several re installs but nothing helps

See the error message:
calibre, version 4.22.0
FOUT: Fouten bij toevoegen: Kon geen enkel boek toevoegen, klik op 'Toon details' voor meer informatie


----------------------------------------------------------------------
Toevoegen van boek mislukt:Lucinda Riley_De Zeven zussen 06_2019 - Zon
S:\35 eBooks tijdelijk\Zon - Lucinda Riley.epub
Met fout:
Traceback (most recent call last):
File "site-packages\calibre\gui2\add.py", line 414, in add_book
File "site-packages\calibre\db\legacy.py", line 225, in create_book_entry
File "site-packages\calibre\db\cache.py", line 62, in call_func_with_lock
File "site-packages\calibre\db\cache.py", line 1621, in create_book_entry
File "site-packages\calibre\db\cache.py", line 1334, in set_metadata
File "site-packages\calibre\db\cache.py", line 1158, in update_path
File "site-packages\calibre\db\backend.py", line 1606, in update_path
File "site-packages\calibre\db\tables.py", line 137, in set_path
File "site-packages\calibre\db\backend.py", line 874, in execute
File "c:\t\t\apsw-47cp24d7\src\cursor.c", line 236, in resetcursor
CantOpenError: CantOpenError: unable to open database file

My drive S: is an drive located on a Synology NAS. All my other programs works with maps on this drive. My Synology drive S: will make an backup every night to another Synology NAS server, placed in a physical other place.

The Calibre software is standard installed on the C: drive on one of my computers in the home network.

As mentioned earlier, I tried on several PC's to install the Calibre software on C: and to create an Calibre database on drive S: without any success.

PS: I am a Dutch user of the Calibre software