Comment 1 for bug 1451983

Temporary workaround:

1) Create a file named, for example:

/etc/apt/sources.list.d/FreeFileSync.list

2) Enter the following line in that file:

deb http://ppa.launchpad.net/freefilesync/ffs/ubuntu trusty main #FreeFileSync

3) And finally enter the usual commands:

sudo apt-get update
sudo apt-get upgrade