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Thunderbird 157.0 breaks Quick Folder Move #271

Description

@TAA204

Thunderbird has just updated to 157.0, and it now says Quick Folder Move is incompatible with 157.0.
Any chance QFM can be updated so it works with 157.0?

Activity

  1. boegel commented on Oct 1, 2026

    @boegel

    Same question here.

    Happy to provide some help/feedback if useful...

  2. TAA204 commented on Oct 1, 2026

    @TAA204
    Author

    I was able to get the add-on working again by updating the "manifest.json" file.
    In the existing file, you'll see a line entry: "strict_max_version": "141."
    If you change it to: ""strict_max_version": "157.
    ", the_ add-on now works with Thunderbird 157.0.
    Obviously, there are a few more steps involved to repackage the files and folders into an ".xpi" file.
    I used Open AI's Codex, with a very cautious step-by-step prompt, to get it all done, and it worked seamlessly.

  3. philgp commented on Oct 1, 2026

    @philgp

    I was able to get the add-on working again by updating the "manifest.json" file. In the existing file, you'll see a line entry: "strict_max_version": "141." If you change it to: ""strict_max_version": "157.", the add-on now works with Thunderbird 157.0. Obviously, there are a few more steps involved to repackage the files and folders into an ".xpi" file. I used Open AI's Codex, with a very cautious step-by-step prompt, to get it all done, and it worked seamlessly.

    I did likewise, and changed the value for "version". Seems to work.

  4. scnrse commented on Oct 1, 2026

    @scnrse

    Same here - doesn't do anything after the latest upgrade... quite unfortunate (without that app my mailbox will explode within days)

  5. TAA204 commented on Oct 1, 2026

    @TAA204
    Author

    I used OpenAI's Codex to troubleshoot the issue [it's a matter of changing "141" to "157" in a file], and it worked to restore the add-on. I'm using the add-on now, and as you noted, my mailbox would burst with out it.
    If you use Codex, and request a cautious step-by-step process, you should have success. Although I've used Codex and ChatGPT extensively, I'm not a programmer, and it worked seamlessly.

  6. scnrse commented on Oct 1, 2026

    @scnrse

    ... I don't even find the string "strict_max_version" in any of the files.

    I searched all over ~/Library/Thunderbird/Profiles/xxxxx.default/extensions

    I moved the xpi out of the library folder, unpacked it - no cigar so far.

  7. moritzp commented on Oct 1, 2026

    @moritzp

    @kewisch , do you mind updating the max_version in the Marketplace again? 😉

  8. TAA204 commented on Oct 1, 2026

    @TAA204
    Author

    @scnrse , you'll find the text string in the "manifest.json" file.

  9. sbfeinstein commented on Oct 2, 2026

    @sbfeinstein

    Would love an official fix for the issue, and realizing how much I enjoy this add-on (and as a former SWE myself) I made a small donation for your great work, @kewisch. Thank you!

  10. ThomGr commented on Oct 2, 2026

    @ThomGr

    @TAA204 @philgp Would you mind sharing the XPI file so we don't have to fiddle with it while we hope for @kewisch to release the fix through the Mozilla channels?

  11. ThomGr commented on Oct 2, 2026

    @ThomGr

    Nevermind, worked it out and it is really ease: unzip the XPI file found in the profile folder of Thunderbird, edit the manifest.json by replacing 141 by 157, save, restart TB - done. Thanks for the hint to this, @TAA204 @philgp

  12. edewaal97 commented on Oct 2, 2026

    @edewaal97

    I found that as a workaround it is possible to remove the entire line with the strict_max_version in the manifest.json file.

    Close thunderbird
    Go to the extensions folder (in windows: %appdata%\Thunderbird\Profiles[your profile id]\extensions)
    Open the .xpi file quickmove@mozilla.kewis.ch.xpi in 7zip
    Edit the manifest.json file (remove the strict_max_version or update it's value) and save it.
    7zip will ask to update the zip, say 'yes'.
    Reopen thunderbird and wait a bit for the extensions to load. Maybe you have to restart it again and Quick Folder Move will work again.

    I noticed that the value was 141.* in the extension, while I was running 156 before and that was working fine.

  13. kewisch commented on Oct 2, 2026

    @kewisch
    Owner

    addons.thunderbird.net has a compat override so the xpi can stay installed, this is why you see the old version.

    I've bumped it on addons.thunderbird.net now, hope everything works as expected!

  14. siffegh commented on Oct 2, 2026

    @siffegh

    addons.thunderbird.net has a compat override so the xpi can stay installed, this is why you see the old version.

    I've bumped it on addons.thunderbird.net now, hope everything works as expected!

    ✔️

    May require checking for updates in the Add-ons Manager.

  15. TAA204 commented on Oct 3, 2026

    @TAA204
    Author

    Many thanks, @kewisch, for the update.

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