macOS Monterey 12 - Couldnt Start Dropbox

[RobertPatton]

bn.BUILD_KEY: Dropbox
bn.VERSION: 131.4.3968
bn.constants.WINDOWS_SHELL_EXT_VERSION: 48
bn.is_frozen: True
machine_id: dd8495f4-eeb6-52f3-a698-4cbb0543dbcf
pid: 3947
ppid: 1
uid: 501
user_info: pwd.struct_passwd(pw_name='robertpatton', pw_passwd='********', pw_uid=501, pw_gid=20, pw_gecos='Robert Patton', pw_dir='/Users/robertpatton', pw_shell='/bin/bash')
effective_user_info: pwd.struct_passwd(pw_name='robertpatton', pw_passwd='********', pw_uid=501, pw_gid=20, pw_gecos='Robert Patton', pw_dir='/Users/robertpatton', pw_shell='/bin/bash')
euid: 501
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/robertpatton'
appdata: '/Users/robertpatton/.dropbox/instance1'
real_path='/Users/robertpatton/.dropbox/instance1'
mode=0o40700 uid=501 gid=20
parent mode=0o40700 uid=501 gid=20
dropbox_path: '/Users/robertpatton/Dropbox'
real_path='/Users/robertpatton/Dropbox'
mode=0o40700 uid=501 gid=20
parent mode=0o40755 uid=501 gid=20
sys_executable: '/Applications/Dropbox.app/Contents/MacOS/Dropbox'
real_path='/Applications/Dropbox.app/Contents/MacOS/Dropbox'
mode=0o100755 uid=501 gid=20
parent mode=0o40755 uid=501 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/yy/w1nv1hm92x1bn8cmjznvcs780000gn/T'
real_path='/private/var/folders/yy/w1nv1hm92x1bn8cmjznvcs780000gn/T'
mode=0o40700 uid=501 gid=20
parent mode=0o40755 uid=501 gid=20
Traceback (most recent call last):
File "dropbox/client/main.pyc", line 808, in wrapper
File "dropbox/client/main.pyc", line 6525, in finish_dropbox_boot
File "dropbox/client/message_queue.pyc", line 307, in _wrapped
File "dropbox/client/main.pyc", line 6052, in _init_components_for_account
File "dropbox/client/main.pyc", line 5976, in create_sync_engine
File "dropbox/sync_engine_boundary/factory.pyc", line 226, in make_sync_engine
File "dropbox/sync_engine/nucleus/classic_client/sync_engine.pyc", line 280, 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 152, in __init__
File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 217, in __init__
File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 587, in _init_new_engine_locked
File "dropbox/sync_engine/nucleus/thin_client/client.pyc", line 182, in __init__
File "desktop/extensions/nucleus/nucleus_python.pyx", line 76, in nucleus_python.NucleusSyncEngine.__cinit__
nucleus_python.SyncEngineError: "Initializing engine |>> Initializing filesystem |>> Attempting to register icons |>> fchflags syscall: _set_hidden |>> Permission denied"

[vflower]

I ran into the same issue.

bn.BUILD_KEY: Dropbox
bn.VERSION: 134.4.4115
bn.constants.WINDOWS_SHELL_EXT_VERSION: 51
bn.is_frozen: True
Traceback (most recent call last):
  File "dropbox/client/main.pyc", line 816, in wrapper
  File "dropbox/client/main.pyc", line 6537, in finish_dropbox_boot
  File "dropbox/client/message_queue.pyc", line 313, in _wrapped
  File "dropbox/client/main.pyc", line 6070, in _init_components_for_account
  File "dropbox/client/main.pyc", line 5994, in create_sync_engine
  File "dropbox/sync_engine_boundary/factory.pyc", line 226, in make_sync_engine
  File "dropbox/sync_engine/nucleus/classic_client/sync_engine.pyc", line 278, in __init__
  File "dropbox/sync_engine/nucleus/classic_client/modern_client/modern_client.pyc", line 245, in __init__
  File "dropbox/sync_engine/nucleus/classic_client/modern_client/base.pyc", line 152, in __init__
  File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 209, in __init__
  File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 520, in _init_new_engine_locked
  File "dropbox/sync_engine/nucleus/thin_client/client.pyc", line 188, in __init__
  File "desktop/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"

I tried all the solutions folks have posted but nothing seem to work.  Dropbox has access to full disk, I have re-installed, rebooted several times, deleted the dropbox folder in application settings...  Nothing seem to want to work.

This is on an iMac 2017 running Monterey 12.0.1.  I performed a clean install of the OS today and then used migration assistant to bring my user folder over.  

Dropbox works fine for the other user on this iMac (also created via migration assistant).  

[andrewmontague]

I upgraded to macOS Monterey this morning, and can no longer launch Dropbox.

I restarted the computer. That didn't work.

I then deleted dropbox and did an advanced reinstall following the instructions on this site. 

But I'm still getting the following error message:

Couldn't start Dropbox. This is usually because of a permissions error.

Please contact Dropbox support with the following info for help:

bn.BUILD_KEY: Dropbox

bn.VERSION: 134.4.4115

bn.constants.WINDOWS_SHELL_EXT_VERSION: 51

bn.is_frozen: True

machine_id: 4c99dc44-26be-56c6-9c70-f03726e0a58f

pid: 2390

ppid: 1

uid: 501

user_info: pwd.struct_passwd(pw_name='andrew', pw_passwd='********', pw_uid=501, pw_gid=20, pw_gecos='Andrew Montague', pw_dir='/Users/andrew', pw_shell='/bin/zsh')

effective_user_info: pwd.struct_passwd(pw_name='andrew', pw_passwd='********', pw_uid=501, pw_gid=20, pw_gecos='Andrew Montague', pw_dir='/Users/andrew', pw_shell='/bin/zsh')

euid: 501

gid: 20

egid: 20

group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root', 'andrew', 'sinead', '_nsurlstoraged', '_serialnumberd'])

effective_group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root', 'andrew', 'sinead', '_nsurlstoraged', '_serialnumberd'])

DYLD_LIBRARY_PATH: None

cwd: '/'

     real_path='/'

            mode=0o40755 uid=0 gid=0

     parent mode=0o40755 uid=0 gid=0

HOME: '/Users/andrew'

appdata: '/Users/andrew/.dropbox/instance1'

         real_path='/Users/andrew/.dropbox/instance1'

                mode=0o40700 uid=501 gid=20

         parent mode=0o40755 uid=501 gid=20

dropbox_path: '/Users/andrew/Dropbox'

              real_path='/Users/andrew/Dropbox'

                    mode=0o40700 uid=501 gid=20

              parent mode=0o40755 uid=501 gid=20

sys_executable: '/Applications/Dropbox.app/Contents/MacOS/Dropbox'

                real_path='/Applications/Dropbox.app/Contents/MacOS/Dropbox'

                      mode=0o100755 uid=501 gid=20

                parent mode=0o40755 uid=501 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/qb/ncc78bts12sg0rjcl10kw1q00000gn/T'

         real_path='/private/var/folders/qb/ncc78bts12sg0rjcl10kw1q00000gn/T'

                mode=0o40700 uid=501 gid=20

         parent mode=0o40755 uid=501 gid=20

Traceback (most recent call last):

  File "dropbox/client/main.pyc", line 816, in wrapper

  File "dropbox/client/main.pyc", line 6537, in finish_dropbox_boot

  File "dropbox/client/message_queue.pyc", line 313, in _wrapped

  File "dropbox/client/main.pyc", line 6070, in _init_components_for_account

  File "dropbox/client/main.pyc", line 5994, in create_sync_engine

  File "dropbox/sync_engine_boundary/factory.pyc", line 226, in make_sync_engine

  File "dropbox/sync_engine/nucleus/classic_client/sync_engine.pyc", line 278, in __init__

  File "dropbox/sync_engine/nucleus/classic_client/modern_client/modern_client.pyc", line 245, in __init__

  File "dropbox/sync_engine/nucleus/classic_client/modern_client/base.pyc", line 152, in __init__

  File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 209, in __init__

  File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 520, in _init_new_engine_locked

  File "dropbox/sync_engine/nucleus/thin_client/client.pyc", line 188, in __init__

  File "desktop/extensions/nucleus/nucleus_python.pyx", line 76, in nucleus_python.NucleusSyncEngine.__cinit__

nucleus_python.SyncEngineError: "Initializing engine |>> Initializing filesystem |>> Attempting to register icons |>> fchflags syscall: _set_hidden |>> Permission denied"

[Razanyousef]

Shsh

[shinbeth]

Don't believe what support claims guys, Dropbox is NOT compatible with Monterey.

I've tried everything as suggested, somehow managed to make it work for a few moments, but now the app won't start again.

I'm giving up. Bye Dropbox, I'm tired of you not updating your software when new OS come.

[shinbeth]

There's no solution to it, Dropbox is NOT compatible with Monterey.

[shinbeth]

This is ridiculous, I won't want to take the risk of uninstalling and re syncing losing hours of my time.

And btw the uninstall/reinstall method doesn't even work!

My god I'm so tired of Dropbox every upgrade is such a joke!

You guys had more than 6 months to make the beta version work with this new OS...

[shinbeth]

I have the opposite problem, whenever I restart my Mac with Monterey, Dropbox won't start anymore and I have to reinstall again.

I did BatchMod the app (even the installer itself, otherwise it wouldn't even install) to give full access to the app, allowed full access in security settings, etc. pointless eventually.

In 2021 Dropbox still doesn't understand how macOs permissions work, making our lives very difficult...

[alakija]

Where is the utility monitor?

[alakija]

Can somebody please post simple step by step instructions on how to fix this?

[alakija]

I don't know what you mean. Your instructions don't make sense to me. What do you mean by close dropbox in activity monitor. Is that the x button???