[david55555]

Originally Posted by PeterT

I think it's related to the name of the file.

actually, changing the file name and folder name didn't do it, but I get a Different error now:

calibre, version 3.21.0
AVISO: Erro ao adicionar: Houve problemas na adição de alguns ficheiros, carregue em 'Mostrar detalhes' para mais informações

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Falha ao adicionar o ficheiro /home/david/Documentos/Biblioteca/1/1 ao livro 1
Com o erro:
Traceback (most recent call last):
  File "/usr/lib/calibre/calibre/gui2/add.py", line 430, in add_formats
    if self.db.add_format(book_id, fmt, path, run_hooks=False, replace=replace):
  File "/usr/lib/calibre/calibre/db/cache.py", line 1411, in add_format
    size, fname = self._do_add_format(book_id, fmt, stream, name)
  File "/usr/lib/calibre/calibre/db/cache.py", line 1378, in _do_add_format
    size, fname = self.backend.add_format(book_id, fmt, stream, title, author, path, name, mtime=mtime)
  File "/usr/lib/calibre/calibre/db/backend.py", line 1519, in add_format
    with lopen(dest, 'wb') as f:
  File "/usr/lib/calibre/calibre/startup.py", line 139, in local_open
    ans = open(name, mode, bufsize)
IOError: [Errno 2] Ficheiro ou directoria inexistente: u'/home/david/Biblioteca do Calibre/Desconhecido/1 (11)/1 - Desconhecido./home/david/documentos/biblioteca/1/1'

Last line says FIle or directory doesn't exist.

I don't have this problem with any other books