In the ND-100S application, have you tried pressing the Cold Start button? You can do this by going to Tools > Cold Start GPS. This will reset your GPS Receiver. Please make sure to attach the cable to the device as to extend the unit away from the computer. The reason for this is that some notebooks, laptops, and tablets produce a high level of electrical interference. In turn, it weakens the GPS signal within close proximity of the device.
Now, let the program run for a few minutes or so outside with a clear access to an open sky.
Also, please check your email for further instructions.