Good afternoon,

Thank you for your patience.
With your help, I almost set up a private messaging system on a test site. There was one little thing left that I decided to ignore for now, so I began to transfer the new settings, including the override.php file, to the production site.

But then new, incomprehensible problems emerged.
  Community Builder displays a message

/** * WARNING: * Do not make changes to this file as it will be over-written when you upgrade CB. * To localize you need to create your own CB language plugin and make changes there. */ defined('CBLIB') or die(); return array( // 17 language strings from file libraries/CBLib/CB/Database/CBDatabaseChecker.php 'FROM_HAS_SENT_MESSAGE_WITH' => '[from] hat eine neue Private Mitteilung gesendet.

[message]', 'FROM_HAS_SENT_MESSAGE' => '[from] hat eine neue Private Mitteilung geantwortet.', 'FROM_HAS_REPLIED_MESSAGE_WITH' => '[from] hat auf Private Mitteilung geantwortet.

[message]', 'FROM_HAS_REPLIED_MESSAGE' => '[from] hat auf Private Mitteilung geantwortet.

[message]', 'EMAIL_NOTE_SITENAME_SUBJECT' => '[sitename] - [subject]', 'YOU_HAVE_A_NEW_PRIVATE_MESSAGE_REPLY_43430b' => 'Sie haben eine Antwort auf Ihre Private Mitteilung', 'YOU_HAVE_A_NEW_PRIVATE_MESSAGE_0a5cd2' => 'Sie haben eine neue Private Mitteilung', );

Also I can't enter key-text pairs into the override tab in Plugin [de-DE].

My knowledge is not enough to understand the advice * To localize you need to create your own CB language plugin and make changes there. */

Does this mean that the Language Overrides system, described in
www.joomlapolis.com/blog/kyle/18701-language-overrides-have-arrived
stopped working?

Thanks for the help.   

Hooray! Everything works.
True, I decided not to use overrides functionality.

Thank you very much again for your attention and support.

P. S.
I tried anyway to make overrides for some messages.
The override tab works great.
But it looks like using the overrides.php file is causing problems.

All the best to you, and thank you for your excellent work.