Everything works, but when I tried to use "Manage comments", then got an error:
An error has occurred.
1146 Table 'chaj.nighb_virtuemart_products_en_gb' doesn't exist SQL=SELECT virtuemart_product_id AS id, product_name AS title FROM nighb_virtuemart_products_en_gb WHERE virtuemart_product_id IN (21)
I changed "#__virtuemart_products_en_gb" on "#__virtuemart_products_ru_ru" in "/administrator/components/com_comment/plugins/com_virtuemart/virtuemart.php" and it worked.
But I understand that it is wrong.