as i type i am upgrading and almost every files has this error in RED.
here is an example of just one of the many lines of text that is scrolling by as these files are downloading;
rsync: failed to set permissions on "/cygdrive/j/games/KSP/KSP_win/KSP_Data/.sharedassets9.assets.LrI7Q2": Invalid argument (22)
windows 10 OS on a haswell i7 with 16 gigs of ram and other bits of hardware that work well with many MMO's and single player games from morrowind to shroud of the avatar.