Slitherine

To reproduce, load attached save file, select drones and attack hive. Game will crash to desktop.

Something I notice: when it crashed the first time, I hadn't save, so I loaded the auto save. Upon loading, the drones (which were attacked during last enemy turn) died. However, when I play the end of turn manually, they live.

I can't seem to find a crash log, but I can confirm this. I used an Avenger Tank (Lance Gun/Titanium Armour/no device), so it wasn't the fact that you used drones that triggered it.