Impossible de démarrer Dropbox.

Bonjour,

Au lancement de Drop box j'ai le message suivant : "Impossible de démarrer Dropbox" / "Il peut s’agir d’une erreur temporaire. Veuillez redémarrer Dropbox."

J'ai fait une réinstallation et supprimé le fichier .Dropbox sans succès.

Je n'ai que 3 postes déclarés et l'application fonctionnait très bien jusqu'à maintenant depuis plusieurs années. Elle fonctionne parfaitement sur les autres périphériques (iPad + macOS Sonoma).

Ma config : macOS sequoia 15.1

Voici le log généré ;

bn.BUILD_KEY: Dropbox
bn.VERSION: 212.4.5767
bn.constants.WINDOWS_SHELL_EXT_VERSION: 77
bn.is_frozen: True
machine_id: f897e016-7396-53e9-9c2b-8e4647bb25bd
pid: 1749
ppid: 1
uid: 502
user_info: pwd.struct_passwd(pw_name='Michel1', pw_passwd='********', pw_uid=502, pw_gid=20, pw_gecos='Michel', pw_dir='/Users/Michel1', pw_shell='/bin/bash')
effective_user_info: pwd.struct_passwd(pw_name='Michel1', pw_passwd='********', pw_uid=502, pw_gid=20, pw_gecos='Michel', pw_dir='/Users/Michel1', pw_shell='/bin/bash')
euid: 502
gid: 20
egid: 20
group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root'])
effective_group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root'])
DYLD_LIBRARY_PATH: None
cwd: '/'
     real_path='/'
               mode=0o40755    uid=0    gid=0
     parent    mode=0o40755    uid=0    gid=0
HOME: '/Users/Michel1'
appdata: '/Users/Michel1/.dropbox/instance1'
         real_path='/Users/Michel1/.dropbox/instance1'
                   mode=0o40700    uid=502    gid=20
         parent    mode=0o40755    uid=502    gid=20
dropbox_path: '/Users/Michel1/Dropbox'
              real_path='/Users/Michel1/Dropbox'
                        mode=0o40750    uid=502    gid=20
              parent    mode=0o40750    uid=502    gid=20
sys_executable: '/Applications/Dropbox.app/Contents/MacOS/Dropbox'
                real_path='/Applications/Dropbox.app/Contents/MacOS/Dropbox'
                          mode=0o100755    uid=502    gid=20
                parent    mode=0o40755    uid=502    gid=20
trace.__file__: '/Applications/Dropbox.app/Contents/Resources/python-packages.zip/dropbox/client/ui/common/boot_error.pyc'
                real_path='/Applications/Dropbox.app/Contents/Resources/python-packages.zip/dropbox/client/ui/common/boot_error.pyc'
                          not found
                parent    not found
tempdir: '/var/folders/wb/z3k783ms7_sfxmnrm11004d80000gp/T'
         real_path='/private/var/folders/wb/z3k783ms7_sfxmnrm11004d80000gp/T'
                   mode=0o40700    uid=502    gid=20
         parent    mode=0o40755    uid=502    gid=20
Traceback (most recent call last):
  File "desktop/dropbox/client/main.py", line 963, in wrapper
  File "desktop/dropbox/client/main.py", line 7141, in finish_dropbox_boot
  File "desktop/dropbox/client/message_queue.py", line 306, in _wrapped
  File "desktop/dropbox/client/main.py", line 6588, in _init_components_for_account
  File "desktop/dropbox/client/main.py", line 6509, in create_sync_engine
  File "desktop/dropbox/sync_engine_boundary/factory.py", line 212, in make_sync_engine
  File "desktop/dropbox/sync_engine/nucleus/classic_client/sync_engine.py", line 243, in __init__
  File "desktop/dropbox/sync_engine/nucleus/classic_client/modern_client/modern_client.py", line 296, in __init__
  File "desktop/dropbox/sync_engine/nucleus/classic_client/modern_client/base.py", line 243, in __init__
  File "desktop/dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.py", line 223, in __init__
  File "desktop/dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.py", line 547, in _init_new_engine_locked
  File "desktop/dropbox/sync_engine/nucleus/thin_client/client.py", line 143, in __init__
  File "desktop/extensions/nucleus/nucleus_python.pyx", line 77, in nucleus_python.NucleusSyncEngine.__cinit__
nucleus_python.SyncEngineError: "Initializing engine |>> Initializing filesystem |>> Failed to write root dot dropbox file |>> Deleting .dropbox before writing a new one |>> Calling unlinkat_native with lossy options |>> unlinkat syscall |>> Permission denied"

Merci !