https://bugzilla.redhat.com/show_bug.cgi?id=1177555
Parag pnemade@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED
--- Comment #3 from Parag pnemade@redhat.com --- First ensure you have yum-langpacks package installed by using rpm -qa | grep yum-langpacks
Then do sudo yum list
If both commands works fine then you will not see any issues in using system-config-language.
What language you tried to install using system-config-language?