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Forum Discussion
Help! "Couldn't start Dropbox" error (Mac & Big Sur)
Dropbox won't start on my MacBook Air (13" 2018), with Big Sur 11.3.1.
Have uninstalled dropbox and reinstalled. Same error
Uninstalled again, advanced re-install. Same error
AFAIK, vanilla ins...
Ran these changes, but no different.
Tried once more, after double-checking firewall off.
uninstall DB
reboot
delete DB folders from local storage, and empty bin
reboot
search and delete every 'dropbox' named file in ~/library
reboot
advanced reinstall
reboot
logoff DB on webclient
reboot
start DB
login
accept all vanilla (recommended) options
and it started and seems to be sync-ing correctly.
Not sure what changed this time around, but DB seems to be working again.
Thanks for your help.
I just tried this "fix" and it failed. Error message was
bn.BUILD_KEY: Dropbox
bn.VERSION: 124.4.4912
bn.constants.WINDOWS_SHELL_EXT_VERSION: 48
bn.is_frozen: True
machine_id: 4902f188-79dc-51ef-ab44-66e5c3af45e7
pid: 1361
ppid: 1
uid: 504
user_info: pwd.struct_passwd(pw_name='ctk', pw_passwd='********', pw_uid=504, pw_gid=20, pw_gecos='C. T. Kelley', pw_dir='/Users/ctk', pw_shell='/bin/tcsh')
effective_user_info: pwd.struct_passwd(pw_name='ctk', pw_passwd='********', pw_uid=504, pw_gid=20, pw_gecos='C. T. Kelley', pw_dir='/Users/ctk', pw_shell='/bin/tcsh')
euid: 504
gid: 20
egid: 20
group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root', 'tim', '_nsurlstoraged', '_serialnumberd', 'ctk', 'bubba', '_sophos', '_xcsbuildagent'])
effective_group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root', 'tim', '_nsurlstoraged', '_serialnumberd', 'ctk', 'bubba', '_sophos', '_xcsbuildagent'])
DYLD_LIBRARY_PATH: None
cwd: '/'
real_path='/'
mode=0o40755 uid=0 gid=0
parent mode=0o40755 uid=0 gid=0
HOME: '/Users/ctk'
appdata: '/Users/ctk/.dropbox/instance1'
real_path='/Users/ctk/.dropbox/instance1'
mode=0o40700 uid=504 gid=20
parent mode=0o40755 uid=504 gid=20
dropbox_path: '/Users/ctk/Dropbox'
real_path='/Users/ctk/Dropbox'
mode=0o40700 uid=504 gid=20
parent mode=0o40755 uid=504 gid=20
sys_executable: '/Applications/Dropbox.app/Contents/MacOS/Dropbox'
real_path='/Applications/Dropbox.app/Contents/MacOS/Dropbox'
mode=0o100755 uid=504 gid=20
parent mode=0o40755 uid=504 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/9q/sddj5fcj2m729sjf5_hbnxb40000gr/T'
real_path='/private/var/folders/9q/sddj5fcj2m729sjf5_hbnxb40000gr/T'
mode=0o40700 uid=504 gid=20
parent mode=0o40755 uid=504 gid=20
Traceback (most recent call last):
File "dropbox/client/main.pyc", line 821, in wrapper
File "dropbox/client/main.pyc", line 6488, in finish_dropbox_boot
File "dropbox/client/message_queue.pyc", line 307, in _wrapped
File "dropbox/client/main.pyc", line 6017, in _init_components_for_account
File "dropbox/client/main.pyc", line 5944, in create_sync_engine
File "dropbox/sync_engine_boundary/factory.pyc", line 225, in make_sync_engine
File "dropbox/sync_engine/nucleus/classic_client/sync_engine.pyc", line 275, in __init__
File "dropbox/sync_engine/nucleus/classic_client/modern_client/modern_client.pyc", line 219, in __init__
File "dropbox/sync_engine/nucleus/classic_client/modern_client/base.pyc", line 149, in __init__
File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 223, in __init__
File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 597, in _init_new_engine_locked
File "dropbox/sync_engine/nucleus/thin_client/client.pyc", line 182, in __init__
File "extensions/nucleus/nucleus_python.pyx", line 76, in nucleus_python.NucleusSyncEngine.__cinit__
nucleus_python.SyncEngineError: "Initializing engine |>> Initializing filesystem |>> Attempting to register icons |>> Opening dst |>> open syscall |>> Permission denied"
Had same problem after installing Big Sur, if you look on hard drive there is a shared folder with a load of junk folders created by the install, deleting these and restarting dropbox forces it to unlink, you then login to dropbox again and synchronise from the cloud again.
