sorry, i didn’t stop to think that elementary os luna is based on Ubuntu 12.04.
The new ppa only has packages for 14.04 and 14.10.
It’s pretty dirty but he can still make things work.
In /etc/apt/sources.list where he previously removed hunterk’s ppa he has to modify the entry for the new ppa.
The format is as follows.
deb file:/path/to/share version main
In his case “version” will automatically be “precise” but the ppa doesn’t have packages for it. He needs to replace it with either “trusty” or “utopic”
Elementary OS looks nice - my girlfriend used to love her installation - but no matter how much their devs try to convince you it’s still fucking outdated