Gary,
I'll be unable to fly until the 2-3rd of April, as I'm going out on vacations. If you're going to set up the mission for the next few days, unfortunately I'll have to pass.
Sorry,
A few months ago I had the chance to go to the Delta 2 launch of Grail in KSC (all 3 times... the first day when they didn't launch, and had the pleasure to sit through a conference made by Charlie Duke, the second day when I was almost at KSC and heard on the radio they called it off for that...
I had that happen to me on every single reentry with the cargo dragon... seems the texture for that phase is corrupt. After a few hours troubleshooting it, I found the problem:
Go to textures/spacex/, look for the "d_hull_cargo_burned.dds" and delete it. Then, make a copy of "d_hull_cargo.dds"...