It seems livna has stopped updating at Fedora 21:

You can get libdvdcss from Remi's repo:



On Tue, May 10, 2016 at 7:13 AM, terry.coons <> wrote:
I receive the following error message when starting yumex after installing the linva repository.
failure: repodata/repomd.xml from livna: [Errno 256] No more mirrors to try. [Errno 14] HTTP Error 404 - Not Found [Errno 14] HTTP Error 404 - Not Found [Errno 14] FTP Error 550 - Server denied you to change to the given directory [Errno 14] HTTP Error 404 - Not Found

You can try starting 'yumex -n' from a command line
and deselecting the repositories causing problems
and try again.
Running yumex -n --root from the command line works.