Hi,

Bug description:

On an Intel MacBook Pro, with MacOS Big Sur 11.7, the installation of French Language Pack is impossible; there is an error message:
"Applications/LbreOffice.app/ ce n’est pas une installation valide de LibreOffice 7.3
Exécutez de nouveau l’installateur et choisissez une version valide de 7.3 LibreOffice"

Below the error message, there is an "Installer" button; once clicked, nothing occurs.

Once closed the installation program (LibreOffice Language Pack.app) and launched again, the result is the same.

This has been tested with Spotlight inactivated, and with files extensions hidden or visible (advanced settings in Finder).

Bug analysis:

A test is done, this test erroneously fails and prevents language pack installation.

Expected functioning:

French Language Pack installation is possible.

Workaround:

The workaround consists in a manual installation of French Language Pack.
Hypotheses:
- LibreOffice is installed in its default place "/Applications/LibreOffice.app",
- User tries to install corresponding version of Language pack (same version, same architecture as LibreOffice)

Follow these instructions:
* quit LibreOffice,
* mount the Language Pack dmg,
* move the file "LibreOffice Language Pack.app" on the desktop,
* right-click on the file (or CTRL+click for mouses with no right-click); on the menu, select "Display the package content",
* on the desktop, there is now a "Contents" directory; open this directory, check that in the directory "Contents/Resources" there is a file “tarball.tar.bz2”,
* launch a Terminal, then type:
    "cd Desktop/Contents/Resources" then Enter key,
    "sudo /usr/bin/tar -C /Applications/LibreOffice.app/ -xjf ./tarball.tar.bz2" then Enter key
* Terminal now displays "Password" followed by a key; type your computer password (there is no feedback when typeing it), then Enter key.

If typed password is correct and if hypotheses are verified, the French Language Pack is now installed.

Launch LibreOffice, hopefully its user interface is in French; if not, go to Preferences / Language / Language settings and, in the right window, select French user interface. 

Possible bug corrections:
- remove the test,
- allow language pack to be installed, by a user action, even if test fails,
- add language packs in LibreOffice.app, in a similar way of what is done with Windows versions.

Regards,

MN