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Old 09-30-2020, 10:18 PM   #390
davidfor
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Posts: 24,905
Karma: 47303824
Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
Quote:
Originally Posted by Ppaa View Post
Rolled back the version to 4.23, but

Starting job: Extract ISBN for 1 books
================================================== =
Title: Atlas of Endometriosis
Format: PDF
Path: \\192.168.1.3\NASpace\Recipe\Library\2007\Atlas of Endometriosis (165)\Atlas of Endometriosis - 2007.pdf
---------------------------------------------------
Exception when scanning for ISBN: not all arguments converted during string formatting
Failed to extract ISBN
================================================== =
Scan complete, with 1 failures

Without this plugin, it makes no sense for me to use Calibre
I have the copy of the book you sent. I can't reproduce it. When I try, I get:

Code:
Starting job: Extract ISBN for 1 books 
=================================================== 
Title:  Obstetric Anesthesia and Uncommon Disorders Gambling 
Format: PDF 
Path:   E:\Library\Testing\2008\Obstetric Anesthesia and Uncommon D (1197)\Obstetric Anesthesia and Uncomm - 2008.pdf 
--------------------------------------------------- 
Failed to initialize plugin: 'C:\\Users\\davidfor\\AppData\\Roaming\\calibre\\plugins\\DeDRM.zip'
  PDF page count: 456 
      Invalid ISBN match: -13    978-0-521-87 
      Invalid ISBN match: -13 978-0-511-38804 
      Valid ISBN13: 9780521870825 
 
  Scan time: 2.15 secs 
  The isbn was found in 2.15 secs 
  New ISBN extracted of: 9780521870825 
=================================================== 
Scan complete, with 0 failures
The plugin does use an external routine that is part of a module that is included with calibre. It could be your anti-virus blocking it. It also needs to create a temporary file. Again, the anti-virus can block this. There plenty of discussion about this problem and how to work around it.

You say this happens for all your books. Do you only have PDFs? Or is it failing for epubs or other formats?

Did you try the conversion I suggested? This will help tell if it is calibre or something external blocking it.

And, has this ever worked? Or is this the first time you have tried the plugin?
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