vyyt
Deity
I was afraid it was the trading post mod. I LOVE that mod... Any way to make it more compatible? Same with RED. Maybe a CCB Version of your own?
I am not 100% sure, I use Ethnic Units instead of RED, but I think RED does not change LUA. Do you know if you can disable RED mid-game and reload from a save? If RED only changes unit graphics and size, it should be ok:
Try disabling RED, then load your saved game (I hope it won't crash at this point), then play. If you get a CTD on the same turn as before, then you can be almost sure the culprit is not RED.
If it IS the culprit and if you only care about new graphics and not scaling and formations, then you can try Ethnic Units instead (you have to alter a few things - read the instructions in the compatible mods thread)