?????????

I went to tool info and this is what it says.

Part U7146
Version V.9R01
Hardware Univ_Revz

Hi,i have an 98 gt mustang and when i go to load the tune,it starts to back up stock tune,dose it 2 times then says it can not back up stock tune,this can happen if you already have a tune installed in car.What is the deal with this? what can i do to fix it?? I have never install a tune on the car ...