I just had the freeze bug hit me myself. Assault spotted a Caesan hiding in a shed fired a rocket against the side wall of it and boom game hung instantly.
save file(s)
https://drive.google.com/file/d/0BwYzqg0314S0bjlHZkx4cm1BTWs/edit?usp=sharing
Reproduction steps: Move forward assault in one of the farm buildings across street to other building. After spotting the Caesan trying to clever girl the squad have rocketeer ( on map edge hiding behind short stone wall) fire rocket into shed game should hang second rocket is meant to detonate.
mods in use: XCE .26 HF,Oppressive UI XCE edition,sleek ai turn, Femonaunts, Ultimate mega mappack 2000.