Hello,
I want to notice you only in this post about new update of the airports. After launching game, you might to see window with text "nová verzia airports.mpf" This is annoucement about new version of file holding data about airports. If you click yes, game will download and setup new version automatically, no vizards, no need to copy anything, only one dialog about success if It is is showed.
New version in this case means new version of airports.mpf file, so dont vorry about downloading 600 mb, this file has about 20 kb only.
There was also some post about unability to install on windows 10, please, try to launch installer as administrator, It should work than.
That's all, I will post in next days official translated and verified documents containing texts which we need to have recorded, so you can do them.
Greetings
Rastislav