Read manuals on the Internet and found a temporary solution.
My site was version 1.0.10 and panel upavrleniya everything worked perfectly. As soon as I updated to version 1.0.14, then immediately disappeared Russian name for the menu.
I want to clarify that the coding of the site and the database used by windows-1251.
It turns out to PHP 5.04 and above, you need to specify the parameters htmlspecialchars encoding, which was done in version 1.0.10.
Please correct this error.
Problem had to be temporarily solved by replacing the new files to the old, because this function is very common in the code.
