Hey optir, sadly those two are the only two solutions I know for that problem. That error occurs when you change the language in middle of a gameplay so the only solution I've been able to find is starting a new game with the selected language from the beginning, in this case in russian, or restarting the game but since none of those worked for you I have no idea what could be happening...
Have you been playing it that way since the beginning or you just changed the language in the middle of the gameplay? Please let me know and that way I can fix it :)
And thank you so much for your kind words!