deixa a esperança de que isso possa funcionar.
se for inacessível devido a um problema de permissão
Quit Dropbox by right-clicking on the Dropbox menu from the menu bar and selecting Quit
Open a terminal window and copy and paste the following line into the terminal (exactly as written below):
sudo chown "$USER" "$HOME"
sudo chown -R "$USER" ~/Dropbox ~/.dropbox
sudo chattr -R -i ~/Dropbox
sudo chmod -R u+rw ~/Dropbox ~/.dropbox
If your Dropbox folder is not ~/Dropbox, make sure you modify all the commands above to point to the correct location.
Restart Dropbox by going to the Internet menu under Applications.