sonata-project/SonataIntlBundle — pull request #63 by mysterty (2014-06-19 16:40:47+00:00)
Title: Update installation.rst

I had trouble "Only the locale "en" is supported." after installing intlBundle following your doc. I found the solution was to add symfony locales.
If you find better solution, please let me know, thancks for your bundles. ;)