Glenn, while debugging this case

1213-prelim-fine.fds.txt

which goes unstable after 2 time steps, I find that the velocity vectors for the PLOT3D do not show up. It is usually helpful to have these vectors to try to figure out where things go unstable. But what I see in this case is shown below. I note that the upper bound on the velocity is "infE". I suspect that is related. I checked this against the resent io changes Marcos made and the problem existed before that, so he is off the hook.