Calibre no longer converts to .kepub, even with proper plugins installed.

Karmam · 06-11-2021, 04:32 PM

I've used Calibre to manage my Kobo's library for many years. For some reason, none of the epub to kepub plugins are functional anymore.

The result is cover art does not sync properly, and the books are slightly wrong in their formatting.

I have KoboTouchExtended, KoboUtlities, and KePub Output installed. Manually converting an epub to kepub returns an error. Directly syncing the file to my Kobo will result in no conversion, but the file extension becomes .kepub.epub - which is useless as far as I can tell.

I'm not sure if a recent Calibre update broke everything, or if it's a firmware issue on the Kobo. Either way, how can I get conversion working again so that Calibre is usable?

Device information:
- Using Calibre (latest version) on my M1 Mac Mini
- Kobo Forma on the latest firmware

PeterT · 06-11-2021, 06:40 PM

Could you run calibre in debug mode and then post the log.

Sent from my Pixel 4a using Tapatalk

davidfor · 06-12-2021, 05:58 AM

Firstly, it is not the firmware. This is not considered at all in either a conversion to kepub or when sending to the device using the KoboTouchExtended driver. Plus, the last firmware release was in February. If it was that, it would have started then.

The problem is most likely errors in the books you are sending. If you open the book in the editor and run the check book tools, any errors shown can break the transformation that the KoboTouchExtended driver does. I hit this for the first time in a while this week. There was an error in the ToC and it needed to be fixed to get it on the device. But, as @PeterT said, we need to see a debug log to get an idea of what is happening. Or a conversion log from the conversion to kepub.

06-11-2021, 04:32 PM	#1
Karmam Junior Member Posts: 1 Karma: 10 Join Date: Jun 2021 Device: Kobo Forma	Calibre no longer converts to .kepub, even with proper plugins installed. I've used Calibre to manage my Kobo's library for many years. For some reason, none of the epub to kepub plugins are functional anymore. The result is cover art does not sync properly, and the books are slightly wrong in their formatting. I have KoboTouchExtended, KoboUtlities, and KePub Output installed. Manually converting an epub to kepub returns an error. Directly syncing the file to my Kobo will result in no conversion, but the file extension becomes .kepub.epub - which is useless as far as I can tell. I'm not sure if a recent Calibre update broke everything, or if it's a firmware issue on the Kobo. Either way, how can I get conversion working again so that Calibre is usable? Device information: - Using Calibre (latest version) on my M1 Mac Mini - Kobo Forma on the latest firmware

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06-11-2021, 06:40 PM	#2
PeterT Grand Sorcerer Posts: 12,166 Karma: 73448616 Join Date: Nov 2007 Location: Toronto Device: Nexus 7, Clara, Touch, Tolino EPOS	Could you run calibre in debug mode and then post the log. Sent from my Pixel 4a using Tapatalk

06-12-2021, 05:58 AM	#3
davidfor Grand Sorcerer Posts: 24,907 Karma: 47303748 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	Firstly, it is not the firmware. This is not considered at all in either a conversion to kepub or when sending to the device using the KoboTouchExtended driver. Plus, the last firmware release was in February. If it was that, it would have started then. The problem is most likely errors in the books you are sending. If you open the book in the editor and run the check book tools, any errors shown can break the transformation that the KoboTouchExtended driver does. I hit this for the first time in a while this week. There was an error in the ToC and it needed to be fixed to get it on the device. But, as @PeterT said, we need to see a debug log to get an idea of what is happening. Or a conversion log from the conversion to kepub.