I had created a Custom Arena (I don't think the terrain matters, but it was NDIsles).
I had gone into the "Staged Mission" sections.
I didn't mean to, but not thinking straight, I clicked on the "Schedule Mission" and boom, my client crashed.
I wasn't sure what else I had done, so I went back in again and went straight there and did nothing else but hit that button and it did the same thing again.
(See attached DMP)
[Edit: this was the old "Schedule Missions" button at the bottom of the "Staged Missions" panel items, right above "Back". It looks like you've added a new one and that one didn't crash.]
