Dear kovidgoyal,
thx a lot - worked like a charm!
Restoration seems completed with only few warnings / errors:
calibre, version 3.25.0
ACHTUNG: Erfolgreich: Wiederherstellung der Datenbank wurde erfolgreich mit einigen Warnungen durchgeführt. Klicken Sie für weitere Informationen auf "Details anzeigen". Die alte Datenbank wurde unter folgendem Namen gespeichert: E:\Calibre Library\Komplett\metadata_pre_restore.db
Failed to restore the books in the following folders:
E:\Calibre Library\Komplett\Tintenherz\Tintenherz (7336) with error:
Traceback (most recent call last):
File "site-packages\calibre\db\restore.py", line 255, in restore_books
File "site-packages\calibre\db\cache.py", line 63, in call_func_with_lock
File "site-packages\calibre\db\cache.py", line 2071, in restore_book
File "site-packages\calibre\db\cache.py", line 1559, in create_book_entry
File "site-packages\calibre\db\backend.py", line 845, in execute
File "c:\t\t\apsw-j6gj96\apsw-3.13.0-r1\src\cursor.c", line 236, in resetcursor
ConstraintError: ConstraintError: UNIQUE constraint failed: books.id
That doesn't look to serious to me and can be fixed.
And most important - edititing metadata seems to work again good!
Thank you very much - dhanyavaad!
kind regards, hornetoli