This is a common problem with Dropbox on linux where there are lots of folders. Please include the fix.
Unable to monitor entire Dropbox folder hierarchy. Please run "echo fs.inotify.max_user_watches=100000 | sudo tee -a /etc/sysctl.conf; sudo sysctl -p" and restart Dropbox to fix the problem.
This is a common problem with Dropbox on linux where there are lots of folders. Please include the fix.