Dropbox lässt sich nicht starten Fehlermeldung

Hallo in die Runde, 

vielleicht weiß jemand weiter?

Seit heute kann die Dropbox auf meinem Desktop nicht mehr geöffnet werden, es erscheint diese Text-Datei als Fehlermeldung: 

dropbox_error08g2tkri.txt

bn.BUILD_KEY: Dropbox
bn.VERSION: 141.4.3299
bn.constants.WINDOWS_SHELL_EXT_VERSION: 52
bn.is_frozen: True
machine_id: 72c36fca-9fdc-547f-a5dd-9deefab00425
pid: 894
ppid: 1
uid: 501
user_info: pwd.struct_passwd(pw_name='mirjamkuchinke', pw_passwd='********', pw_uid=501, pw_gid=20, pw_gecos='Mirjam Kuchinke', pw_dir='/Users/mirjamkuchinke', pw_shell='/bin/bash')
effective_user_info: pwd.struct_passwd(pw_name='mirjamkuchinke', pw_passwd='********', pw_uid=501, pw_gid=20, pw_gecos='Mirjam Kuchinke', pw_dir='/Users/mirjamkuchinke', 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', 'mirjamkuchinke', '_serialnumberd'])
effective_group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root', 'mirjamkuchinke', '_serialnumberd'])
DYLD_LIBRARY_PATH: None
cwd: '/'
real_path='/'
mode=0o40755 uid=0 gid=0
parent mode=0o40755 uid=0 gid=0
HOME: '/Users/mirjamkuchinke'
appdata: '/Users/mirjamkuchinke/.dropbox/instance1'
real_path='/Users/mirjamkuchinke/.dropbox/instance1'
mode=0o40700 uid=501 gid=20
parent mode=0o40700 uid=501 gid=20
dropbox_path: '/Users/mirjamkuchinke/Dropbox'
real_path='/Users/mirjamkuchinke/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/5s/n53mx04j4m753347rh7w49fc0000gn/T'
real_path='/private/var/folders/5s/n53mx04j4m753347rh7w49fc0000gn/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 838, in wrapper
File "dropbox/client/main.pyc", line 6619, in finish_dropbox_boot
File "dropbox/client/message_queue.pyc", line 313, in _wrapped
File "dropbox/client/main.pyc", line 6167, in _init_components_for_account
File "dropbox/client/main.pyc", line 6091, in create_sync_engine
File "dropbox/sync_engine_boundary/factory.pyc", line 218, in make_sync_engine
File "dropbox/sync_engine/nucleus/classic_client/sync_engine.pyc", line 268, in __init__
File "dropbox/sync_engine/nucleus/classic_client/modern_client/modern_client.pyc", line 250, in __init__
File "dropbox/sync_engine/nucleus/classic_client/modern_client/base.pyc", line 202, 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 529, in _init_new_engine_locked
File "dropbox/sync_engine/nucleus/thin_client/client.pyc", line 133, 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 |>> Reading existing xattr |>> fgetxattr syscall: determined size |>> Permission denied"