Love-stable, but it seems it works with love-unstable

I don't know why, but I get this error when I'm trying to install love: "Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable ...

Hi! I have one question about love2d and I think you already know my question after you read the title. How can I install Love2d on Ubuntu 14.04? It doesn't works with the following comands which were used in ubuntu 13, 12: sudo add-apt-repository ppa:bartbes/love-stable sudo apt-get update sudo apt...