Typo in config.php/settings.php

[nammey]

Inside the config.php you have a misspelling of "language" in lines 34 & 36
if(!isset($language)) $langauge = "en";
require_once("lang/".$langauge.".php");

You made the same typo also inside settings.php in line 21

Once you replace $langauge with $language it works if you create a new language file.

Best regards,
nammey