it's been four month since i played SK ,now when im trying to play again it just stayed at 0% and says "multiple intances of this application's installer are running. this one will stop and let another complete" ,it just make me so frustrased about this ,please please please PLEASE! HELP ME!! :'''''((
i'm guessing that you have tried shutting down your computer and restarted it. it will help people solve your problem of you tell us where you are running it from (steam, kongregate, or the SK website)