[@fireroman Participant 9 years, 6 months ago]

I use last version. And I downloaded from here https://translate.wordpress.org/projects/wp-plugins/bbpress/stable/ru/default
But problem is: files shouldn’t be here /wp-content/languages/bbpress/ , files should be here /wp-content/languages/plugins/
Change instruction please https://codex.bbpress.org/getting-started/bbpress-in-your-language/