Hello everyone!

I'm struggling with the installation of Hotfix 1.04. It has downloaded all the requiered files, but installation keeps hanging at about 60-70% and then GOG galaxy freezes, Windows freezes, everything freezes and I can't ever soft reboot my PC because it's frozen. After hard reboot the installation restarts from like 50%, comes to 70% and evrything repeats. What shall I do?