Hi I was trying to use the Gears of War 3 save editor and it told me i had an invalid xbox 360 container opened. I have no idea what this means. Help pls?
That typically means you've tried to open a file that does not have the 360 STFS container (via 360Revolution), Load the full save, don't extract any files/content within the save. I suspect that is why you received that notification.