@WHoward, I've had two consistent CTD's while playing with your DLL and immediately after selecting the tenet that gives you six free Foreign Legion units. Now truth be told I use a lot of other mods alongside yours, but the game plays well and loads from saves just fine up to this particular problem...and I'm well into the Atomic Age on a huge map. I was wondering if there might be something that comes to mind to you that could be an issue from any particular one of your many PickNmix mods, since I use so many of those all the time? (By the way, I am NOT using Blublu's mod that returns the Foreign Legion to France.)
My favorite suspect is that it may be an issue with the Unique Buildings Compendium since it replaced the Foreign Legion with the Patisserie - and I am using that mod in this game.