Theatre of War 2: Kursk 1943 patch with new content is available for download

[Sneaksie]

This error means that the autoupdater cannot save anything inside Program files folder because Windows won't let it do so, it's likely that your other problems are caused by this as well. To fix this, launch the game using 'run as administartor' context menu command (right-click on shortcut or game executable to open context menu).