Happened twice. After the first time I deleted the tune and created another one with the same changes and it did it again.
Gages go crazy and dash flashes all kinds of messages.
Both times, downloading the stock tune fixes everything.
I'm guessing I have some sort of parameter combo that the ECU doesn't like, maybe with mapped points and distance tables.
Anyone care to take a gander and see if you notice anything that might be awry?