If it's UTF-8 you're writing to the file, then you had better specify that as the encoding in the XML file, hadn't you? You're specifying ISO-8859-1 (which does not include any Russian characters, AFAIK). Also note that it's called "UTF-8", not "UTF8".
Joined: Apr 24, 2009
Yes, I have already tried those options, but the result is same.