I've got an EE 2.5.5 site and I'd like to be able to set the control panel language to Italian. I've followed the instructions on how to do this from the user guide.
I downloaded the Italian language pack from EllisLab's GitHub account, and I've uploaded the italian folder to system/expressionengine/language/italian. But when I set the language from english to italian, I get the following error:
An Error Was Encountered Unable to load the requested language file: language/italian/core_lang.php
I have added an issue on GitHub, but not sure if that is being monitored closely by EllisLab so thought I'd post here for help.
Is that language pack out of date (as there's not even a core_lang.php file within the repository), or do I need to be doing this in a different way?