Have you tried the test firmware on your SSC?
If not, please do so.
Once it is flashed on the PIC of the SSC, we will be able to narrow down what the problem can be.
If after flashing it, and applying power to the SSC, the lights are lighting, then the problem will be upstream.
If there is no lights after flashing it, we will focus on the SSC itself, the light string and the power. One of those would be bad.
So make sure you downloaded the test firmware for SSC v3.
Open your PIC programmer program, and reprogram the PIC on the SSC after importing the test firmware (as we did last night, make sure you apply power to the device by checking the 3.3V check box, and that you have selected the correct PIC in the drop down menu for devices)
Once it is programmed, make sure the battery is connected to your SSC and that it is outputting the correct voltage.
At that point, the lights on the string should be doing some things, i.e., they would not be OFF.
Please report the steps you took, and the result you are seeing.