Kobo - OPF file Error

[RZetlin]

I have one epub that cannot be transferred to my Kobo device.

Other epub books are able to transfer okay.

The error message I get is:

calibre, version 1.39.0
ERROR: Error: Error communicating with device

OPF file does not exist at location pointed to by META-INF/container.xml

Traceback (most recent call last):
  File "site-packages\calibre\gui2\device.py", line 86, in run
  File "site-packages\calibre\gui2\device.py", line 571, in _upload_books
  File "calibre_plugins.kobotouch_extended.device.driver", line 276, in upload_books
  File "site-packages\calibre\devices\kobo\driver.py", line 1898, in upload_books
  File "calibre_plugins.kobotouch_extended.device.driver", line 175, in _modify_epub
  File "site-packages\calibre\ebooks\oeb\polish\container.py", line 859, in __init__
InvalidEpub: OPF file does not exist at location pointed to by META-INF/container.xml

[JSWolf]

It's not a Kobo problem.

The file container.xml points to where the OPF file lives in the ePub and in this case, either the OPF is missing or container.xml is not pointing to the correct location.

Try the edit book feature of Calibre to try to fix it.

[RZetlin]

Originally Posted by JSWolf

It's not a Kobo problem.

The file container.xml points to where the OPF file lives in the ePub and in this case, either the OPF is missing or container.xml is not pointing to the correct location.

Try the edit book feature of Calibre to try to fix it.

When I try and edit the book I get this error

Traceback (most recent call last):
  File "site-packages\calibre\gui2\tweak_book\job.py", line 34, in run
  File "site-packages\calibre\gui2\tweak_book\boss.py", line 52, in get_container
  File "site-packages\calibre\ebooks\oeb\polish\container.py", line 1132, in get_container
  File "site-packages\calibre\ebooks\oeb\polish\container.py", line 859, in __init__
InvalidEpub: OPF file does not exist at location pointed to by META-INF/container.xml

When I try and open the book in Sigil I get this error:

Cannot extract file: ando*_9781612626420_epub3_opf_r1.opf

I don't know how to fix this book.

[itimpi]

The problem is that it is basically an invalid epub file as its internal structure is incorrect.

A way I have found to fix such books is to

• Change the file extension to ZIP and extract the contained files
• Locate the html files that contain the text of the book, and then create an index.html file that points to them in the right order
• Add the index.html file to Calibre to create an HTML version of the book
• Use Calibre to convert the freshly imported file to epub, which now has the correct internal structure for an epub

[RZetlin]

Thank you for your help guys.

I found the issues with the book.

The container.xml file had incorrect file path name.

It had ando*_97.opf while the file itself was named ando__97.opf.

It was a book I purchased from Kobo which the Kobo reader can open, but not Calibre.

[PeterT]

Could you share the name of the book? For all we know it might be an issue with the tool used to remove the Kobo DRM....

[RZetlin]

Originally Posted by PeterT

Could you share the name of the book? For all we know it might be an issue with the tool used to remove the Kobo DRM....

It could be an issue with obok, but have used it with other books before.