When I went to install aptik, I tried to add the PPA in the terminal as I normally do with:
sudo apt-add-repository ppa:teejee2008/ppa
But I get the message:
sudo: apt-add-repository: command not found
Undeterred, I downloaded the .deb file and used gdebi (downloaded from the new Software Center) to install it, which it did fine.
But when I open Aptik from the Applications menu, it gives me the following error (see picture).
What can I do? This is a show stopper for me if I can't add a PPA to restore my backup.