I did mine and had no problem at all and helped Matt (jjm4life) do his following same procedures. The error message he got and then Lotusquacious received same seems to be some security issue. Both me and Bruce (nosirrahx) have 2018's, Matt and Lotusquacious have 2017's, could that be an issue? Or could it be as simple as since they ordered same time they each got the others tune so that is why it's not matching ECU? And Bruce I'm trying to remember when you did yours, didnt you have to send your ECU to Komotec for the 465 tune?Did you get it resolve? I think you might have missed a step along the way. I thought my ecu was toasted after installing the tune. Turned out that there were a specific in the instruction that applies for only for the evora 400.