Dropbox won't finish installing

So, I click Menu >> Internet >> Dropbox to install Dropbox.

It loads up to 100%, but never finishes. Here is how to fix it: (from forum)

Open a Terminal window and type:

sudo apt update
press <ENTER>

enter your super user password, and press <ENTER>
wait

sudo apt upgrade press <ENTER>
wait
sudo apt dist-upgrade
press <ENTER>

wait

reboot

Then try reinstalling Dropbox again, should work.