Hi Tommy, wow thats a lot of problems in one place.
Long exraction time is a known issue. The reason is a larg number of map files. I have to solve it one day.
It is weird that it crashes when you press calculate casualties. Can you tell me your system specs and send me your Player.log file from C:\Users\<your user name>\AppData\LocalLow\Ivan Stepanov\Nuclear War Simulator to my email ivan.stepanov.nws@gmail.com after a crash?