Tried again and wasn't able to trigger the crash.

Having this same issue. At first it was crashing shortly after loading the Scouting mission, later seemingly randomly during the mission and after reverting to a previous save during the mission, and now when trying to return to base to end the mission. Attached are relevant logs. The most recent is the crash on attempting to return to base. So far it is only on this mission I am experiencing crashes.
Deleting the My Documents/Arma3 folder seems to temporarily fix the issue. Before I deleted the folder I was crashing seconds after loading the mission for the first time, every time, but started crashing again later. Again, deleting the folder allowed me to return to base without it crashing when previously it was crashing every time I tried.