My name has the ó, á and é charaters in it, which is shown as blank in the gamer profile, if i try to change anything there (face, voice etc) i can't save it (i have to alt+f4 out) since it writes i can't change my default name. I guess it is because the "special characters" my name has. Didn't have this issue in Arma2 (tho they were blank there too).