Dropbox won't start anymore

I had a similar error, and this worked:

rm -rf $HOME/.dropbox-dist
dropbox start -i

After running those commands in the terminal, let the dropbox downloader run and install. It should work immediately after it finishes.

I had the same problem and found this fix

Basically, I fixed the error by reinstalling dropbox distribution with the following terminal commands:

sudo rm -rf /var/lib/dropbox/.dropbox-dist
dropbox start -i

Try to reinstall dropbox.

First open a terminal and type the following to remove dropbox:

sudo apt-get clean
sudo apt-get update
sudo apt-get --purge remove nautilus-dropbox
sudo apt-get --purge autoremove

Now type the next commands in sequence to install dropbox.

sudo apt-key adv --keyserver pgp.mit.edu --recv-keys 5044912E
sudo add-apt-repository "deb http://linux.dropbox.com/ubuntu $(lsb_release -sc) main"
sudo apt-get update && sudo apt-get install nautilus-dropbox

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