Since there was an update released, there\'s the chance that you indeed run out of mirrors (had bad luck) I suggest you retry again, and this time, go to the Planeshift folder and rename the updater utility (updater.exe) to another name you want and then launch it. This is done because there\'s some problem in this version with the updater trying to update itself.
Ensure also that you don\'t have any issues with your software firewall (if you\'ve any)
Better luck this time.