[zoneparser]

I have tried with both Calibre Portable 5 and Calibre 5 64 bit. Still creating a 0KB pdf at the end of it.

relevant part of log below with decrypt key obfuscated

Spoiler:

DeDRM v10.0.2: Trying to decrypt 2pi340o8.pdf
DeDRM v10.0.2: 2pi340o8.pdf is a PDF ebook
DeDRM v10.0.2: Trying encryption key default_ade_key_uuid_DeACSM_uuid_382cc070-3504-45ac-a29a-f1902a21425b
DeDRM v10.0.2: Exception when decrypting after 0.1 seconds
Traceback (most recent call last):
File "calibre_plugins.dedrm.__init__", line 636, in PDFDecrypt
File "calibre_plugins.dedrm.ineptpdf", line 2322, in decryptBook
File "calibre_plugins.dedrm.ineptpdf", line 2127, in __init__
File "calibre_plugins.dedrm.ineptpdf", line 1905, in __init__
File "calibre_plugins.dedrm.ineptpdf", line 1452, in set_parser
File "calibre_plugins.dedrm.ineptpdf", line 2031, in read_xref
File "calibre_plugins.dedrm.ineptpdf", line 1988, in find_xref
calibre_plugins.dedrm.ineptpdf.PDFNoValidXRef: Unexpected EOF
DeDRM v10.0.2: Failed to decrypt with key default_ade_key_uuid_DeACSM_uuid_382cc070-3504-45ac-a29a-f1902a21425b after 0.1 seconds
DeDRM v10.0.2: Trying encryption key default_key
DeDRM v10.0.2: Exception when decrypting after 0.1 seconds
Traceback (most recent call last):
File "calibre_plugins.dedrm.__init__", line 636, in PDFDecrypt
File "calibre_plugins.dedrm.ineptpdf", line 2322, in decryptBook
File "calibre_plugins.dedrm.ineptpdf", line 2127, in __init__
File "calibre_plugins.dedrm.ineptpdf", line 1905, in __init__
File "calibre_plugins.dedrm.ineptpdf", line 1452, in set_parser
File "calibre_plugins.dedrm.ineptpdf", line 2031, in read_xref
File "calibre_plugins.dedrm.ineptpdf", line 1988, in find_xref
calibre_plugins.dedrm.ineptpdf.PDFNoValidXRef: Unexpected EOF
DeDRM v10.0.2: Failed to decrypt with key default_key after 0.1 seconds
DeDRM v10.0.2: Looking for new default Adobe Digital Editions Keys after 0.1 seconds
Found 1 keys
DeDRM v10.0.2: Trying a new default key
DeDRM v10.0.2: Exception when decrypting after 0.9 seconds
Traceback (most recent call last):
File "calibre_plugins.dedrm.__init__", line 712, in PDFDecrypt
File "calibre_plugins.dedrm.ineptpdf", line 2322, in decryptBook
File "calibre_plugins.dedrm.ineptpdf", line 2127, in __init__
File "calibre_plugins.dedrm.ineptpdf", line 1905, in __init__
File "calibre_plugins.dedrm.ineptpdf", line 1452, in set_parser
File "calibre_plugins.dedrm.ineptpdf", line 2031, in read_xref
File "calibre_plugins.dedrm.ineptpdf", line 1988, in find_xref
calibre_plugins.dedrm.ineptpdf.PDFNoValidXRef: Unexpected EOF
DeDRM v10.0.2: Failed to decrypt with new default key after 0.9 seconds
DeDRM v10.0.2: Ultimately failed to decrypt after 0.9 seconds. Read the FAQs at Harper's repository: https://github.com/apprenticeharper/...master/FAQs.md
DeACSM v0.0.15: Running file type plugin failed with traceback: