Try it doing it from the command line. i.e: sudo add-apt-repository ppa:mscore-ubuntu/mscore-stable
And then to install MuseScore: sudo apt-get update sudo apt-get install musescore -- You received this bug notification because you are a member of Ubuntu Studio Bugs, which is subscribed to musescore in Ubuntu. Matching subscriptions: Ubuntu Studio Bugs https://bugs.launchpad.net/bugs/1478931 Title: stable PPA refused by Mint17 Status in musescore package in Ubuntu: New Bug description: In Mint17 Quiana, Rebecca, Raphaela, all based upon Ubuntu 14.04 , trying to add this PPA <code>deb http://ppa.launchpad.net/mscore-ubuntu/mscore-stable/ubuntu trusty main </code> one get a pop upmessage <code> Impossible d'ajouter le ppa no JSON obect could be decoded </code> However this PPA can be added to Lubuntu vivid (but with a GPG error) So I will also file a bug in Mint To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/musescore/+bug/1478931/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : ubuntustudio-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp
