Thanks Uzin for your quick reply, and sorry for asking because it was my mistake - something went wrong with the extraction. I did it again and found all necessary there, installed files and everything works fine. It really is a beautiful map - nice work.
BTW, do you happen to have any kind of information of the Russian WWII airfields around Leningrad and on the eastern side of lakes Ladoga and Onega up to Sorokka/Kemi?
I have a few photos but I'd like to know more about them.