This source seems to indicate that it was a software error that guided the stage into the wrong orbit. http://en.ria.ru/world/20140828/192413515/Galileo-Satell

This source seems to indicate that it was a software error that guided the stage into the wrong orbit. http://en.ria.ru/world/20140828/192413515/Galileo-Satellites-Incident-Likely-Result-of-Software-Errors.html http://en.ria.ru/world/20140828/192413515/Galileo-Satellites...