I never intended the Defreezer to be used on EaW save games. EaW save games have the file extension .PetroglyphEaWSave instead of .PetroglyphFoCSave. You could try to change the extension to .PetroglyphFoCSave, then the Defreezer will be able to detect it. After you've used the Defreezer you have to change the extension back obviously. However, the Defreezer has never been tested on EaW save games, so it may break the save.