KCC: Importing stuck at 6%

byrhias · 05-06-2025, 12:29 AM

This has never happened before but after I synced my Clara Colour today, I can't seem to side load any new books from Calibre properly.

The books appear in Kobo (under Finder) once I transfer via Calibre. As soon as I eject, the import screen gets stuck at 6% (sometimes 11%, 20%) and then immediately reboots. Once it reboots, none of the books are in kobo. However, if I plug the device back in, it's still there in directory (via Finder) but in Calibre, it says that the book is not in the device.

I've fixed all of the books for errors and have tried uploading each book one by one to try to root out the problematic book but ever since the update, I can't side load a single book. The same stuck import screen happens to every single book I try to side load.

Appreciate any advice or help!

Thank you!

aborh · 05-06-2025, 04:57 PM

I have had this trouble with almost every Kobo device I've used, and the only thing that has solved the problem for me was to restart the device, hook it up with the USB cable to my PC, and delete any recently added PDF files. It seems I've had a few corrupted PDFs in my Calibre database, and they caused the device to stop importing (often, but not always at 6%), and then the device reboots, and the most recently added files are not in the "My Books" listing.

It has *always* been a PDF in my experience. Good luck!

DNSB · 05-06-2025, 05:47 PM

Quote:

Originally Posted by aborh

It has *always* been a PDF in my experience. Good luck!

While more common with PDF file, I've also seen this with ePub files.

JSWolf · 05-07-2025, 04:35 AM

But the problem is mostly a defective ePub or PDF.

byrhias · 05-07-2025, 10:06 AM

Thank you all! My kobo decided to take matters into its own hands and factory reset itself yesterday. After starting from scratch, things seem to be back to normal again but I will definitely keep your advice in mind and be wary of any bad epubs and files going forward. Thanks again!

05-06-2025, 12:29 AM	#1
byrhias Member Posts: 22 Karma: 20010 Join Date: Mar 2025 Device: Kobo Clara Color	KCC: Importing stuck at 6% This has never happened before but after I synced my Clara Colour today, I can't seem to side load any new books from Calibre properly. The books appear in Kobo (under Finder) once I transfer via Calibre. As soon as I eject, the import screen gets stuck at 6% (sometimes 11%, 20%) and then immediately reboots. Once it reboots, none of the books are in kobo. However, if I plug the device back in, it's still there in directory (via Finder) but in Calibre, it says that the book is not in the device. I've fixed all of the books for errors and have tried uploading each book one by one to try to root out the problematic book but ever since the update, I can't side load a single book. The same stuck import screen happens to every single book I try to side load. Appreciate any advice or help! Thank you!

05-07-2025, 10:06 AM	#5
byrhias Member Posts: 22 Karma: 20010 Join Date: Mar 2025 Device: Kobo Clara Color	Thank you all! My kobo decided to take matters into its own hands and factory reset itself yesterday. After starting from scratch, things seem to be back to normal again but I will definitely keep your advice in mind and be wary of any bad epubs and files going forward. Thanks again! Last edited by byrhias; 05-07-2025 at 10:08 AM.

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05-06-2025, 04:57 PM	#2
aborh Member Posts: 14 Karma: 10 Join Date: Mar 2024 Device: Kobo Clara HD, Libra Colour	I have had this trouble with almost every Kobo device I've used, and the only thing that has solved the problem for me was to restart the device, hook it up with the USB cable to my PC, and delete any recently added PDF files. It seems I've had a few corrupted PDFs in my Calibre database, and they caused the device to stop importing (often, but not always at 6%), and then the device reboots, and the most recently added files are not in the "My Books" listing. It has always been a PDF in my experience. Good luck!

05-07-2025, 04:35 AM	#4
JSWolf Resident Curmudgeon Posts: 79,474 Karma: 145863170 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	But the problem is mostly a defective ePub or PDF.

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