MobileRead Forums - View Single Post - Library import, corrupted files, what are the options?

mpaluchowski · 12-18-2025, 03:49 PM

I'm trying to import a library from a backup I did earlier via Calibre's export function. It's a little over 5 GB of data spread into 6 .calibre-data files.

Somewhere around the 25% mark I get an error:

Code:

calibre, version 8.16.2
ERROR: Failed: Failed to import data. Click "Show details" for more information.

Traceback (most recent call last):
  File "calibre/gui2/dialogs/exim.py", line 156, in run_action
  File "calibre/utils/exim.py", line 478, in import_data
  File "calibre/db/cache.py", line 3627, in import_library
ValueError: Corrupted files:
EPUB format for <book title>

where <book title> is one of the books from my library. I could live without that book, but the import won't proceed any further.

What options do I have? I can't see anything on this in Calibre's documentation.

12-18-2025, 03:49 PM	#1
mpaluchowski Junior Member Posts: 1 Karma: 10 Join Date: Dec 2025 Device: Kindle	Library import, corrupted files, what are the options? I'm trying to import a library from a backup I did earlier via Calibre's export function. It's a little over 5 GB of data spread into 6 .calibre-data files. Somewhere around the 25% mark I get an error: Code: calibre, version 8.16.2 ERROR: Failed: Failed to import data. Click "Show details" for more information. Traceback (most recent call last): File "calibre/gui2/dialogs/exim.py", line 156, in run_action File "calibre/utils/exim.py", line 478, in import_data File "calibre/db/cache.py", line 3627, in import_library ValueError: Corrupted files: EPUB format for <book title> where <book title> is one of the books from my library. I could live without that book, but the import won't proceed any further. What options do I have? I can't see anything on this in Calibre's documentation.