[jraffa]

Here is the debug log.
Also adding the encrypted file gives the end result, able to import but unable to read

calibre Debug log
calibre 3.31 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.17134-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.17134')
Python 2.7.12+
Windows: ('10', '10.0.17134', 'SP0', u'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 8, 0) && DeDRM (6, 6, 1) && Package KFX (from KFX Input) (1, 8, 0) && Prince PDF (1, 4, 3) && Set KFX metadata (from KFX Output) (1, 22, 0) && KFX Output (1, 22, 0) && KFX metadata reader (from KFX Input) (1, 8, 0) && KFX Input (1, 8, 0) && Interface Plugin Demo (1, 0, 0)
calibre 3.31 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.17134-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.17134')
Python 2.7.12+
Windows: ('10', '10.0.17134', 'SP0', u'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 8, 0) && DeDRM (6, 6, 1) && Package KFX (from KFX Input) (1, 8, 0) && Prince PDF (1, 4, 3) && Set KFX metadata (from KFX Output) (1, 22, 0) && KFX Output (1, 22, 0) && KFX metadata reader (from KFX Input) (1, 8, 0) && KFX Input (1, 8, 0) && Interface Plugin Demo (1, 0, 0)
Turning on automatic hidpi scaling
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 127.664921466 x 127.590697674
Using calibre Qt style: True
[0.00] Starting up...
[0.00] Showing splash screen...
[0.06] splash screen shown
[0.06] Initializing db...
[0.06] db initialized
[0.06] Constructing main UI...
[1.94] main UI initialized...
[1.94] Hiding splash screen
[11.09] splash screen hidden
[11.09] Started up in 11.09 seconds with 17 books
stdout+stderr from file dialog helper: ['', '']
piped data from file dialog helper: ['-\xf7\x92\xf3)n\x98\xb5(\xd7\x10]\x03"\x9c\xc1sO\x9e\xd8$\xc0\xc9\xb6z"[\xfcP?\xacy', 'C:\\Users\\raffa\\Documents\\My Kindle Content\\B00AKE1QK4_EBOK\\B00AKE1QK4_EBOK.kfx-zip']
DeDRM v6.6.1: Trying to decrypt B00AKE1QK4_EBOK.kfx-zip
Using Library AlfCrypto Python
Decrypting KFX-ZIP ebook: B00AKE1QK4_EBOK
Got DSN key from database default_key
Found 1 keys to try after 0.1 seconds
Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.aa5bdb41-4945-4b81-a93b-0999c297e652.voucher
KFX DRM voucher successfully decrypted
Decrypting KFX DRMION: B00AKE1QK4_EBOK.azw
Decryption succeeded after 0.3 seconds
stdout+stderr from file dialog helper: ['', '']
piped data from file dialog helper: ['*\xaa\xcc\x13\xcb\xbf*\xb9\xd5\x0b{\x14o\xdc\xb1\ x83aeN$\x07\xdc\x1a\x14\xc2;(\xc74(\x8e\xb3', 'C:\\Users\\raffa\\Documents\\My Kindle Content\\B00AKE1QK4_EBOK\\B00AKE1QK4_EBOK_B00AKE1Q K4_EBOK_nodrm.kfx-zip']
DeDRM v6.6.1: Trying to decrypt B00AKE1QK4_EBOK_B00AKE1QK4_EBOK_nodrm.kfx-zip
Using Library AlfCrypto Python
Decrypting KFX-ZIP ebook: B00AKE1QK4_EBOK_B00AKE1QK4_EBOK_nodrm
Got DSN key from database default_key
Found 1 keys to try after 0.0 seconds
The .kfx-zip archive does not contain an encrypted DRMION file
Decryption succeeded after 0.1 seconds
DeDRM v6.6.1: Finished after 0.1 seconds
Package KFX (from KFX Input) 1.8.0: Packaging C:\Users\raffa\AppData\Local\Temp\calibre_vxcgyq\e giv2y.kfx-zip
Processing container: B00AKE1QK4_EBOK.azw
Processing container: CR!3TYH0V90Z970330GE4CGKMP7GP11.azw.res
Processing container: CR!5AB7YHY06S1MKA2TPTRV8A7V5T24.azw.res
Processing container: CR!AX8DG4364N17ZFWMFSED76R5ZSRC.azw.md
Processing container: CR!F9FF0YBVYD1MN4E31VAGCK9A72AG.azw.res
Processing container: CR!HQWYQHT5NS1G3AFN3E22J2HYR6NF.azw.res
Processing container: CR!K2KP57TAQ917Q4YV6TJCVGJ7VVQX.azw.res
Processing container: CR!KNAMW6PQWS21HB043V1CA81K20G5.azw.res
Processing container: CR!KVMX5QE62D6AVCD7YRDCGC7J1FM5.azw.res
Processing container: CR!QKNR9NWJEN0KQ706JQKR3R4VXBTX.azw.res
Processing container: CR!W9EMMW9ND96717W5GMGFX7VQ7CC4.azw.res
Processing container: CR!XP7RYT5VEX377FWD6S6MNA73WFHQ.azw.res
kfxgen version: 7.149.1.0/PackageVersion:YJReaderSDK-1.6.2071.0 Month-Day:02-12
Features: CanonicalFormat-2, kfxgen.pidMapWithOffset-1, kfxgen.textBlock-1, max_id-748, reflow-section-size-4, reflow-style-1, yj_table-1
Metadata: ASIN=B00AKE1QK4, asset_id=CR!TCES3KSA011H14AEBS05C9TTPM83, author="Hartley, Richard", author="Zisserman, Andrew", book_id=WiwBfkbbSyOioShuNv-Xtw1, cde_content_type=EBOK, content_id=B00AKE1QK4, cover_image=521x800, creator_version=2.15.0, file_creator=YJConversionTools, is_sample=False, issue_date=2004-03-25, language=en, pages=673, publisher="Cambridge University Press", reading_orders=1, selection=enabled, title="Multiple View Geometry in Computer Vision"
KFX container created may be too large for some devices (33096723 bytes)
Package KFX (from KFX Input): Imported as C:\Users\raffa\AppData\Local\Temp\calibre_vxcgyq\e zo3xz.kfx
KFX metadata reader (from KFX Input) activated for C:\Users\raffa\AppData\Local\Temp\calibre_vxcgyq\w nnycm_add_books\0\B00AKE1QK4_EBOK_B00AKE1QK4_EBOK_ nodrm.kfx
Added Multiple View Geometry in Computer Vision to db in: 1.6
Added 1 books in 27.1 seconds