.mo / .po translations are not functioning correctly

Hello kind Sirs,

I am once again in need of WPMU support badassery.

I have added define('WPLANG', 'nb_NO'); to my wp-config

and renamed the .mo/.po files default-nb_NO.mo and default-nb_NO.mo and uploaded these to the folder .../wp-content/plugins/appointments/languages

No luck! What am I doing wrong? Thank in advance for your prompt help :slight_smile:

With Kind Regards,

Karl