For some reason, I can't get my WWII units to work. I can get every other unit working but the Extra WWII ones. I get the standard error, then kicks me back to the desktop. I know how to add units btw, I've got lots of other ones working in the same scenario. Oddly enough I can't get them working in any scenario, even my old ones where they use to work. Could my WWII units be corrupt?