Hello David for, and thank you for your fast reply !
To be sure, I installed Calibre on another PC, and tried the procedure with the two device possibilities (Kobo Aura / Kobo). Be sure my reader is configurated as explained above : Create Bookshelves, Delete Empty Bookshelves and Set series information. I only chose "tags" for the column managment.
So, here is the debug log :
calibre 2.3 [64bit] isfrozen: True is64bit: True
Windows-7-6.1.7601-SP1 Windows ('64bit', 'WindowsPE')
('Windows', '7', '6.1.7601')
Python 2.7.8
Windows: ('7', '6.1.7601', 'SP1', 'Multiprocessor Free')
Starting up...
Started up in 3.66 seconds with 1096 books
Job: 1 Get device information started
DeviceJob: 1 Get device information done, calling callback
DeviceJob: 1 Get device information callback returned
Job: 2 Set library information started
DeviceJob: 2 Set library information done, calling callback
DeviceJob: 2 Job:Set library information 2callback returned
Job:Set library information 3 finished
Get list of books on device started
DEBUG: 0.0No details available.
KoboTouch:books - oncard='None'
Job
EBUG: 0.0 1KoboTouch:books - oncard='None', prefix='G:\'
Get device information finished
No details available.
DEBUG: 0.0 Kobo device: Kobo Aura
DEBUG: 0.0 Version of driver: (2, 1, 7) Has kepubs: True
DEBUG: 0.0 Version of firmware: (3, 8, 0) Has kepubs: True
DEBUG: 0.0 Firmware supports cover image tree: True
DEBUG: 0.0 KoboTouch:books - opts.extra_customization= [u'tags', True, True, False, False, False, False, False, False, True, False, False, u'']
DEBUG: 0.0 KoboTouch:books - prefs['manage_device_metadata']= manual
DEBUG: 0.0 KoboTouch:books - set_debugging_title to ''
DEBUG: 0.0 KoboTouch:books - length bl=0
C:\Program Files\Calibre2\pylib.zip\dateutil\parser.py:339: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
DEBUG: 0.1 KoboTouch:books - length bl after sync=11
DEBUG: 0.1 KoboTouch:books - reading device database
DEBUG: 0.3 Database Version=104
DEBUG: 0.3 KoboTouch:books - shelf list: []
DEBUG: 0.3 KoboTouch:books - query= SELECT Title, Attribution, DateCreated, ContentID, MimeType, ContentType, ImageID, ReadStatus, ___ExpirationStatus, FavouritesIndex, Accessibility, IsDownloaded, Series, SeriesNumber, ___UserID, ExternalId FROM content where BookID is Null and ((Accessibility = -1 and IsDownloaded in ('true', 1 )) or (Accessibility in (1,2) and IsDownloaded in ('true', 1)) ) and not ((___ExpirationStatus=3 or ___ExpirationStatus is Null) and ContentType = 6) AND (externalId IS NULL OR externalId = '') AND contentId NOT LIKE 'file:///mnt/sd/%'
DEBUG: 0.6 KoboTouch:books - about to sync_booklists
DEBUG: 0.6 USBMS: starting sync_booklists
DEBUG: 0.7 USBMS: finished sync_booklists
DEBUG: 0.7 KoboTouch:books - have done sync_booklists
DEBUG: 0.7 KoboTouch:books - end - oncard='None'
DEBUG: 0.7 KoboTouch:books - oncard='carda'
DEBUG: 0.7 KoboTouch:books - Asked to process 'carda', but do not have one!
DEBUG: 0.7 KoboTouch:books - oncard='cardb'
DEBUG: 0.7 KoboTouch:books - Asked to process 'cardb', but do not have one!
DeviceJob: 3 Get list of books on device done, calling callback
DeviceJob: metadata_downloaded: Starting set_books_in_library
DeviceJob: set_books_in_library: books to process= 11
DeviceJob: set_books_in_library finished: time= 0.0
DeviceJob: metadata_downloaded: updating views
DeviceJob: metadata_downloaded: syncing
DeviceJob: metadata_downloaded: refreshing ondevice
DeviceJob: metadata_downloaded: sending metadata_available signal
DeviceJob: 3 Get list of books on device callback returned
Job: 2 Set library information finished
No details available.
Job: 3 Get list of books on device finished
No details available.
No need to tell that no bookshelf has been created yet...
Thank you so much for your help !