Calibre inept plugin 'Adobe.APS' security handler error

[sidd80]

Hello together!

I have following problem:

I have a drm secured pdf file.
Acutually I can open the file with with Adobe Reader 10.1.4.38.

If I try to remove the DRM with ineptpdf_8.4.51.pyw and and the copied adeptkey.der the DRM is removed!

But if i try the same with calibre and the ineptpdf plugin: ineptpdf_v01.4_plugin.zip it doesnt work.

I also started calibre in the debugging mode to get more information about the plugin handling:
"Syntax Error: Couldn't find the 'Adobe.APS' security handler"

Can anyone give me an advice?

Thanks
Michael


Here is the debugging info:

calibre Fehlerdiagnoseprotokoll
calibre 0.8.67
Windows-7-6.1.7601-SP1
Windows
('Windows', '7', '6.1.7601')
Python 2.7.3
Windows: ('7', '6.1.7601', 'SP1', 'Multiprocessor Free')
Starting up...
Key u'G' for shortcut Bücher erwerben is already used by An Reader übertragen, ignoring
Key u'G' for shortcut Bücher erwerben is already used by An Reader übertragen, ignoring
Started up in 75.70 seconds with 389 books
Worker Launch took: 0.477999925613
Job: 1 Read metadata (0 of 1) finished
Read metadata (0 of 1)
	IneptPDF: Calibre configuration directory = C:\Users\Michael\AppData\Roaming\calibre
	IneptPDF: Keyfile adeptkey.der found in config folder.
	Ready to start decrypting.
	Error serializing pdf. Probably wrong key.
	IneptPDF: Encryption key invalid... trying others.
	Running file type plugin Inept PDF DeDRM failed with traceback:
	Traceback (most recent call last):
	  File "site-packages\calibre\customize\ui.py", line 148, in _run_filetype_plugins
	  File "calibre_plugins.ineptpdf.__init__", line 2223, in run
	ADEPTError: IneptPDF - Ultimately failed to decrypt
	Syntax Error: Couldn't find the 'Adobe.APS' security handler
	pdfinfo errored out with return code: 1
	Traceback (most recent call last):
	  File "site-packages\calibre\customize\ui.py", line 312, in get_file_type_metadata
	  File "site-packages\calibre\customize\builtins.py", line 320, in get_metadata
	  File "site-packages\calibre\ebooks\metadata\pdf.py", line 78, in get_metadata
	ValueError: Could not read info dict from PDF

Added Mein neuer Job! to db in: 0.686000108719 seconds