i downloaded the game a week ago and the installer just mucked right up. so i said F this, and Downloaded the NEW installer from battle.net. the one with the setup > playable > Optimal bars. However this is going to take a long time to install (8gigs). My friend down the way has install files that worked for him, i could simply take my external and go over there. If i stop the new install and try to install from his files, will it brake my game?