I tried to get vlc 2.2, so that I could run vlsub. In terminal, I entered
sudo add-apt-repository ppa:videolan/master-daily followed by
sudo apt-get update and then
sudo apt-get install vlc.
VLC appears in my dock and in applications, but it cannot open now.
What is the problem? Did I add updates from the repository that I shouldn't have? How can I close it and revert back to my older version of VLC?