If you are having problems with Windows 10, proceed as follows:
- Right-click on the game icon in your installation directory.
- Click on "Properties".
- Select the "Compatibility" tab, and under "Compatibility mode" check the "Run this program in compatibility mode for" checkbox
- Now select "Windows 7" from the drop-down menu.
- Further down, under "Settings", activate the check box "Run program as administrator".
- Now click on "OK" and then start the game again.