Multilingual child theme of Twenty Ten, one the bundled themes of WordPress : TwentyTen-xili v. 1.6.1
Master Branch is reserved for latest version of xili-language 2.15.0
This example is visible (and documented) here
After installation or updating, it is fully recommanded to refresh permalinks.
-- a child theme needs his parent theme named twentyten v. 1.6 and WP 3.9.1
Recommendation: after uncompressing the zip, rename the folder without suffix -master to obtain "twentyten-xili" before to add it in wp-content/themes/ folder!
IMPORTANT: Before updating don't forgot to keep a backup of the current languages files (.mo, .po) in child sub-folder.