A Recent Bug in Synch my Kobo Ereaders

[HKuser]

I have owed a kobo ereader (kobolibraH2O) for some time and it synched ok with my book collection. As did my new Libra2. Suddenly while the book and series info continued to synch perfectly none of the collection info was added.
I reported this as a Calibre bug and was told by Kovid that it would be better to bring the problem here, preferably wirh a debug dump.

I took the dump. It contained the error message
----------------------------------
Driver: KoboTouch'
DEBUG: 0.5 device_driver_name - could not load extended driver. Exception= No module named 'calibre_plugins.kobotouch_extended'
-----------------------------------
In fact I have specified & customised the Kobo Touch driver.

I factory reset my new Libra6 - which interestingly does NOT erase the Collection info. I had to do that manually. Set up a new Calibre library with a small set of books and proceeded to test against my now virgin Libra 2.
the forgoing is one error message. The cumulative log can be found ataaaaaaa;-
---------
https://drive.google.com/open?id=1kU...4&usp=drive_fs
----------
Please Please someone help!

[DNSB]

By any chance, do you have both the KoboTouch and the KoboTouchExtended drivers installed and enabled?

[chaley]

Originally Posted by HKuser

[...]
I reported this as a Calibre bug and was told by Kovid that it would be better to bring the problem here, preferably wirh a debug dump.

Actually, it was me that made that suggestion.

Originally Posted by HKuser

I took the dump. It contained the error message
----------------------------------
Driver: KoboTouch'
DEBUG: 0.5 device_driver_name - could not load extended driver. Exception= No module named 'calibre_plugins.kobotouch_extended'
-----------------------------------
In fact I have specified & customised the Kobo Touch driver.

That message isn't usually an error. It says that the kobotouch extended driver is not installed, which means the standard kobotouch driver will be used. It is only an error if you expect to be using the extended driver.

Originally Posted by HKuser

I factory reset my new Libra6 - which interestingly does NOT erase the Collection info. I had to do that manually. Set up a new Calibre library with a small set of books and proceeded to test against my now virgin Libra 2.
the forgoing is one error message.

Your original bug report started with this:

I am running Calibre 7.8 on Windows 11

I have, until recently, run without problems. Yesterday I noticed that the Tag I apply to new fiction books was not being applied, The books were loaded but but without the tag.

The library contains 3917 epubs

Paraphrasing what you said, at least one tag exists for which Kobo collections aren't made. This means there is a problem with calibre creating Kobo collections from tags.

The reason for that is shown in the log:

DEBUG:    0.0 KoboTouch:books - prefs['manage_device_metadata']= manual

This says that Metadata Management in "Preferences / Sending books to devices" is set to "Manual management". It must be set to "Automatic management" if you want calibre to create collections. If calibre ever created collections then this preference must have been changed from automatic to manual.

Note that if the preference is set to manual then calibre tries to keep all existing collections, without modification or verification. I don't use this feature so I can't comment on its behavior.

Another part of the debug log says

collections_columns: Tags
use_collections_template: False
create_collections: True

This says that once metadata management is set to automatic then calibre will create collections using only the tags column, which given your original message is what I think you want.