LinuxMint 17.3: Dropbox icon and preferences not working

To fix dropbox icon and preferences not working:

I did the following to make it permanent in LinuxMint 17.3:

Open terminal and type in “dropbox stop”
Type “dbus-launch dropbox start” into the terminal.

Close the terminal.
Click on the dropbox icon, click on “Preferences”, uncheck the “Start Dropbox on startup”, click on “OK” then restart the computer.

Click on the Linuxmint “Menu”, “Preferences”, “Startup Applications”, “Add”, “Custom command”, type “Dropbox” into the “Name” box and type “dbus-launch dropbox start” into the “Command” box.
Click on “Add”, close all windows and restart the computer.