I have an error message in 4.7 when downloading a cover:
Spoiler:
calibre, version 4.7.0
ERREUR : Exception non gérée: <b>KeyError</b>:u'title'
calibre 4.7 Portable embedded-python: True is64bit: False
Windows-10-10.0.18362-SP0 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.18362')
Python 2.7.16+
Windows: ('10', '10.0.18362', 'SP0', u'Multiprocessor Free')
Interface language: fr
Successfully initialized third party plugins: DeDRM (6, 5, 5) && Kindle and Mobipocket DeDRM (0, 4, 5) && Reading List (1, 6, 6) && Modify ePub (1, 4, 0) && KoboTouchExtended (3, 1, 5) && KindleUnpack - The Plugin (0, 82, 1) && EpubSplit (2, 8, 0) && Generate Cover (1, 5, 21) && Open With (1, 5, 10) && KePub Output (3, 1, 3) && Obok DeDRM (6, 5, 4) && EpubMerge (2, 7, 0) && Kobo Utilities (2, 9, 0) && Count Pages (1, 9, 0) && Quality Check (1, 9, 11) && Fichier de sortie KePub (2, 3, 3)
Traceback (most recent call last):
File "site-packages\calibre\gui2\metadata\single_download.py" , line 912, in check
File "site-packages\calibre\gui2\metadata\single_download.py" , line 935, in process_results
KeyError: u'title'
It doesn't seem to prevent new covers to download all the same, but for the two books I bought this morning, it just showed the same cover as the existing, so I am not sure.