You should use K1.5.3 language file as a base for BOTH Kunena 1.0.11 and 1.5.4. Kunena uses identical English language file in both releases.
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New translation (after K1.5.3):
// 1.0.11 and 1.5.4
DEFINE('_KUNENA_MOVED', 'Moved');
Please note that the translations for these strings (131-136) have been changed:
DEFINE('_KUNENA_ERROR_INCOMPLETE_ERROR', 'Your Kunena installation is incomplete!');
DEFINE('_KUNENA_ERROR_INCOMPLETE_OFFLINE', 'Because of the above errors your Forum is now Offline and Forum Administration has been disabled.');
DEFINE('_KUNENA_ERROR_INCOMPLETE_REASONS', 'Possible reasons for this error:');
DEFINE('_KUNENA_ERROR_INCOMPLETE_1', '1) Kunena installation process has failed or timed out (try to install it again)');
DEFINE('_KUNENA_ERROR_INCOMPLETE_2', '2) You have manually modified or removed some of the Kunena tables from your database');
DEFINE('_KUNENA_ERROR_INCOMPLETE_3', 'You can find solutions to the most common issues on our community documentation wiki: <a href="
docs.kunena.com/index.php/Installation_Issues
">Kunena Documentation Wiki');
