The economic slowdown has claimed another high-profile project. Stark Enterprises for years has been pushing a vision for a dramatic revitalization of downtown Cleveland. For now, that vision will have to be pushed back. In November, Robert Stark issued a statement saying he is dropping the project because of the real estate credit crunch and the “retail expansion freeze.” Furthermore, landowners who had granted Stark options on where he wanted to build are unwilling to continue to extend.