Kindle collection plugin for Calibre not working

[omin]

I have a jailbroken PW4 and I'm trying to use Kindle Collection plugin in Calibre with Librarian Sync. I tried using Update collections (calibre plugin) and Rebuild collections (calibre plugin) but both methods didn't work. Does anyone know how to get this to work?

calibre, version 4.9.1
Kindle Collections: <P>Preview report generated 2 collections.<P>

...

Collections saved to the Kindle:

    Collection  Managed By  Books  Change
    ----------  ----------  -----  ------
    blog        Calibre     13     Replaced (from column Collections)
    listened    Calibre     1      Replaced (from column Collections)

No collections selected to delete from the Kindle.



=== Settings:

Column: Collections
        Action:      Create
        Prefix:      ""
        Suffix:      ""
        Minimum:     ""
        Ignore:      ""
        Include:     ""
        Rename from: ""
        Rename to:   ""
        Split on:    ""

Never delete/modify these Kindle collections:      
Action when toolbar icon is clicked:               Show menu (default)
Preserve existing Kindle-only collections:         False
Ignore prefix/suffix when comparing Calibre names: True
Ignore case when pattern matching:                 True
Reset collection times:                            True
Ignore exported collections db:                    False
Only build a diff database:                        False
Kindle Model:                                      5100
Calibre Personal doc tag:                          ""
Kindle collections file:                           /Volumes/Kindle/system/collections.json
Plugin customization file:                         /Users/User/Library/Preferences/calibre/plugins/Kindle Collections.json
System Encoding:                                   utf-8

[omin]

Nvm. It works now

Notes:
- Nothing was happening with the message "Updating collections (from Calibre)..." before.
- I reinstalled Python on Kindle to fix. Now, there's additional message that pops up.
- It would be great if there's some sort of error handling...

[NiLuJe]

There is. it requires your setup not to be broken to show up (otherwise, you'll have to go digigng in system logs ).