since i am not certain of the exact problem go to here and then look though the control system manual. the sections of it that would be of the most help to you would be 2.2.4 through the rest of that document which explains how to set the drivers station up and test it, 3.1.5 which explains about the software for it and 3.1.6 which explains the inputs and much more importantly the outputs of the drivers station. Since i don't know exactly what is going on with your drivers station I can't be more specific unfortunately.
http://www.usfirst.org/community/frc....aspx?id=10934