help on several parameters parameters

In the main.py file there is an OPTION paramater which is set to 1. Can you provide more info about that parameter? Why is the z_sample set to `np.random.uniform(-0.5, 0.5, size=(config.batch_size, dcgan.z_dim))` instead of from -1 to 1?
When generating samples with OPTION = 1 the results are like noise images like this [http://tinypic.com/r/5txwg3/9](url) while when OPTION=0 the generated samples are like [http://tinypic.com/r/2zf8tw1/9](url)
Also, the program doesn't work without is_crop parameter while testing. It gives such error: `ValueError: Trying to share variable discriminator/d_h3_lin/Matrix, but specified shape (8192, 1) and found shape (25088, 1).`
While testing only noise is generated and fed to the generator, why is that parameter needed?