CTD on loading issue

[QuintusSertorius]

Recently something happened with a fair few of my latest saves, which meant they wouldn't load. They start loading, the music would kick in, and when the green bar finished they'd CTD. I had to re-play about 12 turns to get back to where I was from the save before that.

I just had the same thing happen again in my game, and once again I saved, quit, started EB again, loaded and got a CTD.

I've got all the fixes and the optional script optimisation, which I'm starting to think is the source of all my issues. I appreciate that LoRdBuLa spent a lot of time on it, but I suspect longer loading times is the lesser of two evils, since we keep trying new iterations of the optimised script, affecting more and more files, yet still not necessarily fixing the problems. And possibly causing others.

I had a cloned Makedonian FM who I stuck on Cape Horn. He died, and the stack out there "re-appeared" so I moved them back. Not long before I closed the game down before this bug, Pella's banner disappeared, suggesting a clone. Only there wasn't a cloned FM there, only one of their regular units showing a peasant unit card.

Around the same time, there was also a cloned Ptolemaic FM, though he didn't ghost or have an invisible banner. Just two of them in the same stack with the same name and picture and age and so on.

Other things I can think of that might be potential problem-sources:
-I give the Eleutheroi faction around 400k a turn. Is there some limit on how big a treasury can grow, so perhaps I hit an overflow type issue which is only triggered once I try to load up a save?
-I turn of my virus protection while the game is running, because Norton slows everything down and interferes with any and every process running. Could there be a virus at work?
-I use Forced Diplomacy a fair bit on and off. Whenever I use it to switch ownership of settlements around, I always save then load the game.
-I use move_character and create_unit a lot.
-I save every single turn.
-I Alt+Tab out of the game a lot to save screenshots.

If it happens a third time, I think I'm just going to have to start clean again, and not bother with the optimised script.