I have some pretty basic scripts that I bought with the purchase of my V2. I have 4 licenses with the purchase of the GM and Cummins package and have tuned my cummins 06, my brothers, and now trying to run the script over my cousins stock tune I get a no start. I have not updated my V2 for awhile due to the fact that the last update was before they did away with the deletes for the 6.7s. I was trying to keep that so I could delete a 6.7 which I am in the market for. The only thing I found about this tune is that after running the script it changes the CVN. Is this an issue of having a previous box tuner on the truck? When I reflashed the stock tune it ran just as normal. I have read about this issue but I didn't see how it would relate to something that is already working.