Same issue in Linux Mint 17.2 XFCE. When Dropbox daemon is started with 'sudo dropbox start' the icon shows properly and works OK in "Notification Area". When the daemon is started as normal user with 'dropbox start' then icon shows up in "Indicator Plugin" but as a red slashed circle on black background, when clicked shows an empty menu that does nothing. It is a bug in a recent update of Dropbox. Extensive discussion in http://askubuntu.com/questions/732967/dropbox-icon-is-not-working-xubuntu-14-04-lts-64/734886 and the simplest workaround is
Same issue in Linux Mint 17.2 XFCE. When Dropbox daemon is started with 'sudo dropbox start' the icon shows properly and works OK in "Notification Area". When the daemon is started as normal user with 'dropbox start' then icon shows up in "Indicator Plugin" but as a red slashed circle on black background, when clicked shows an empty menu that does nothing. It is a bug in a recent update of Dropbox. Extensive discussion in http:// askubuntu. com/questions/ 732967/ dropbox- icon-is- not-working- xubuntu- 14-04-lts- 64/734886 and the simplest workaround is
Just insert:
os.environ[ 'DBUS_SESSION_ BUS_ADDRESS' ] = ""
into /usr/bin/dropbox
at the beginning, after
import os