when hooking the tuner to the truck to download its stock tune into the cortex, it is suppose to give you a file number to subsequently load back onto the superchip server. No stock file number appears on the cortex screen when I go through the process. It tells me that it has been uploaded but no file number shows on the screen. when I uploaded it back onto the superchip server it shows nothing. I have done this about 4 times. any suggestions from anyone?