Dropbox seems to be erasing itself from my Ubuntu install (Chromebook - Crouton with xiwi, Ubuntu 16.04.06 xfce). Installed it yesterday with no problem then desktop icon disappeared and the command dropbox was not found. Reinstalled it with the following two commands:
cd ~ && wget -O - "https://www.dropbox.com/download?plat=lnx.x86_64" | tar xzf
It installed and seemed to run. I clicked on the icon and my whole Linux process froze. When I restarted it from the ChromeOS terminal, the process attempted to start Dropbox and returned this error: xfce4-appfinder: failed to execute: Failed to execute child process "dropbox" (No such file or directory)
Putting "dropbox" into the Ubuntu terminal yields bash: Dropbox: command not found and trying to remove it (using instructions from How do I uninstall Dropbox?) yields: Package 'nautilus-dropbox' is not installed, so not removed and Package 'dropbox' is not installed, so not removed
This has happened 3 times now.