No need to go through that much trouble; it was probably some sort of fluke. I'll let you know if it happens again though, and will play without Ironman from now on
Well, I've got a brand new save for you to try it out on! It's on the nightly from the third (openxcom_git_master_2015_12_03_2332.zip) because I'm a dolt and thought I could will it into working. No quickdraw slot mod this time, though.
OK, I managed to load it after upgrading to the latest nightly.
In short, I don't know what is wrong. The game crashes when I enter the inventory, when I finish the turn, when the alien dies... I have never seen such an unspecified case, and nobody has reported anything like this. I would guess caused by juggling versions of mods and/or
OpenXCom in the middle of battle, but I really can't say.
Please just reload Geoscape before the battle and check if the mission goes right.