Shoutbox

This translation file is not up to date and its CompatibilityLevel=4331 is wrong and doesn't support the version you have because the Preferences panel lists the languages whose compatibility levels meet the requirement of the software version.

Although it is not up to date, you can edit this file and modify the compatibility level as the compatibility level written in Lng_Default.ini file so you can see and select it in the Preferences. However, keep in mind that due to lack of translations of some new options&features you may encounter English sentences in the software.

Sebek is most probably subscribed to this thread and see your post so he will update his translation soon.