Just added a temporary dev build via my phone from one version back that should have instant action not crashing: you can try the LancerTactics_0_04_10 file until I get back to my computers.
LancerTactics_0_04_10
It's all fine! However, I still am unable to load Instant Action, even on this version of the game.
Reposting my log files again. But for now I'm fine with waiting for a bit. It is the Holidays after all!