Our Community is in read-only mode until April 8th, learn more here. You can still search existing threads or get help via Dropbox Support, the Dropbox Help Center, or Learn.
Forum Discussion
The app seems to be crashing on macOS Tahoe 26.4 (Beta 1)
Application Affected
Dropbox
Device
mac studio
Operating System/Browser (if using the web)
macOS 26.4 Beta 1
Dropbox App Version (if using the app)
241.4.4853
Question or Issue
Dropbox is crashing since I installed macOS Tahoe 26.4 (Beta 1) this morning. The errormessage is:
DYLD_LIBRARY_PATH: None
cwd: '/'
real_path='/'
mode=0o40755 uid=0 gid=0
parent mode=0o40755 uid=0 gid=0
HOME: '/Users/sander'
appdata: '/Users/sander/.dropbox/instance3'
real_path='/Users/sander/.dropbox/instance3'
mode=0o40700 uid=501 gid=20
parent mode=0o40755 uid=501 gid=20
dropbox_path: '/Volumes/Data/.CloudStorage/Data/Dropbox'
real_path='/Volumes/Data/.CloudStorage/Data/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/v5/1fn_t3055sd904vr0bg75ts40000gn/T'
real_path='/private/var/folders/v5/1fn_t3055sd904vr0bg75ts40000gn/T'
mode=0o40700 uid=501 gid=20
parent mode=0o40755 uid=501 gid=20
Traceback (most recent call last):
File "desktop/dropbox/fs_api/lifecycle.py", line 238, in client
File "desktop/dropbox/fs_api/lifecycle.py", line 297, in _create_thin_client
File "desktop/dropbox/fs_api/fs_api_adapter.py", line 54, in __init__
File "desktop/extensions/fs_api/fs_api_python.pyx", line 63, in fs_api_python.FsApiServer.__cinit__
fs_api_python.FsApiError: "Initializing fs api |>> Initializing platform |>> Opening worker root directory |>> open syscall |>> FSErrorCode::PermissionDenied"
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "desktop/dropbox/client/main.py", line 1106, in wrapper
File "desktop/dropbox/client/main.py", line 8849, in finish_dropbox_boot
File "desktop/dropbox/client/message_queue.py", line 338, in _wrapped
File "desktop/dropbox/client/main.py", line 8130, in _init_components_for_account
File "desktop/dropbox/client/main.py", line 8038, in create_sync_engine
File "desktop/dropbox/sync_engine_boundary/factory.py", line 237, in make_sync_engine
File "desktop/dropbox/sync_engine/nucleus/classic_client/sync_engine.py", line 264, in __init__
File "desktop/dropbox/sync_engine/nucleus/classic_client/modern_client/modern_client.py", line 330, in __init__
File "desktop/dropbox/sync_engine/nucleus/classic_client/modern_client/base.py", line 260, in __init__
File "../mac_arm64_dropbox_virtual_env/lib/python3.8/functools.py", line 967, in __get__
File "desktop/dropbox/fs_api/lifecycle.py", line 267, in client
dropbox.fs_api.lifecycle.FsApiClientCreationException: "Initializing fs api |>> Initializing platform |>> Opening worker root directory |>> open syscall |>> FSErrorCode::PermissionDenied"
24 Replies
Replies have been turned off for this discussion
LynnDbx My user has Read & Write
LynnDbxDropbox Engineer
Thanks for sharing that. Looks like you have permission to the Dropbox folder yourself. The Dropbox app should be running under your permissions so it should also have access as long as it is able to read & enter each of the parent folders for your Dropbox folder in order to get to your Dropbox folder. Since the Dropbox app is running into a PermissionDenied error when trying to access your Dropbox folder, then something is denying us permissions.
Your Dropbox folder is at "/Volumes/Data/.CloudStorage/Data/Dropbox" on your device, so we should check each of the parent directories to ensure we have traversal permissions for those directories (we can open them in order to look at any sub-folders).A quick way to do this would be to run the following command (paste it in and then hit enter) in the Terminal app if that's available for you (I've personalized this command to your Dropbox folder path):
ls -ld /Volumes \ /Volumes/Data \ /Volumes/Data/.CloudStorage \ /Volumes/Data/.CloudStorage/Data \ /Volumes/Data/.CloudStorage/Data/DropboxThis will list out the read/write permissions for each parent folder of your Dropbox folder. If you're comfortable running this and then posting the results here, that would help us further investigate your issue.
Hi LynnDbx , See below
drwxr-xr-x 7 root wheel 224 Mar 16 19:35 /Volumes drwxr-xr-x@ 27 sander staff 864 Jan 25 12:33 /Volumes/Data drwxr-xr-x 5 sander staff 160 Dec 7 2024 /Volumes/Data/.CloudStorage drwxr-xr-x@ 4 sander staff 128 Apr 16 2025 /Volumes/Data/.CloudStorage/Data drwx------@ 18 sander staff 576 Jan 29 06:31 /Volumes/Data/.CloudStorage/Data/Dropbox- LynnDbx
Thanks for sharing that. That output confirms that the directory permissions are not the problem that we're running into. Everything there looks fine.
As long as the Dropbox app is running with your permissions, it should be able to access that folder. Based on that there's two potential things happening to cause this PermissionDenied issue:
- Either your Dropbox app is not running with user permissions (seems unlikely to have changed with a macOS version update)
- Or as part of the macOS 26.4 update, Apple has restricted which programs can access the ".CloudStorage" directory. This seems much more likely and would explain why this started happening with the macOS version update.
Did you explicitly move your Dropbox folder into this ".CloudStorage" directory at some point, or was it put there by an automatic process that you're using? Would you be open to using a different location for your Dropbox folder to rule out this issue?
