Crash after epic end turn battle - how to deal with instability?

In the process of making Hellas great again I have besieged the tyrannoi Makedonai's capital. During the AI turn, it has decided to sally out and engage my forces. My KH army consisted of mostly hoplites (and some support units), backed up by my Ptolemy ally. We were faced up against two full Antigonas's armies with many elite units.

My ally turned out to be critically useless, charging the enemy at the outset and unsurprisingly getting utterly wrecked. However he did manage to kill Antigonos early on, which made enemy troops much more likely to rout. This has granted the remainder of my army an epic and extremely unlikely Pyrrhic victory. Keep in mind he outnumbered me at least 1.8:1, and about 3:1 in horse, not to mention having much better army composition.

Elated, I went back to the campaign map however, that was when the game crashed.

I tried repeating the battle. This time I deployed my hoplites in two lines hoping to weather the brunt of the enemy attack. And weather it they did, holding out admirably against the enemy's desperate pike push across a wide front. Antigonas was cleverer this time, keeping himself and his strategoi well out of harm's reach. There was no way for me to win, but my troops did survive until the timer ran out, landing me an attrition victory.

I have to say, I'm incredibly impressed with the combat system of this mod. It's the most gripping fun I've ever had in a TW game. Far beats the blob frottery of that garbage fest that is WHTW.

And then the same thing. Campaign map loads, I see the post battle ransom screen, and right after the enemy declines my ransom offer, the game crashes with the "unspecified error" message. To say the least I was very distressed by this, since both battles were incredibly epic, won at a hair's breadth, and I don't think I would be able to repeat them once again.

So I'm left thinking - is this a script issue or a memory one? Did anyone else have a similar problem that they managed to solve? Would altering the amount of gb the game uses help resolve the error? I know for a fact that EB II has gotten much more stable since previous versions, and I'm hoping this issue might not necessarily have something to do with the hardware, and thus might be addressable by the mod devs, which is why I decided to start this thread. Any help would be much appreciated.

EDIT: A friend of a friend of mine asked his lawyer, who operates from Vanuatu and has diplomatic immunity, to reproduce the exact same conditions with the 4gb patch applied to his kingdoms and med II executables. He in turn reported the exact same problem. I'm only posting this data for information purposes, not to promote any criminal, communist or terrorist activity. In fact I absolve myself from claiming I wrote the preceding three sentences, which I have produced by automatic writing with no conscious input of my own.

That's a weird error. Are you sure that you did not killed in the battle both the Faction Leader and the Faction Heir? That tends to crash the game (its being modified for the next version).
And do you conquer the city after the offer? It may be that error!

What happened was that I was besieging the last Macedonian city, with its FL and FH sallying out to fight me, with an additional army supporting them. Winning that battle would have (probably) caused the elimination of that faction. However I'm not sure about this, since they still had about 2/3 of their army intact. If their units went back to their city after the battle, I would have had to simply retreat, as I had no means of continuing the siege.

Originally Posted by Carl Jung was right

What happened was that I was besieging the last Macedonian city, with its FL and FH sallying out to fight me, with an additional army supporting them. Winning that battle would have (probably) caused the elimination of that faction. However I'm not sure about this, since they still had about 2/3 of their army intact. If their units went back to their city after the battle, I would have had to simply retreat, as I had no means of continuing the siege.

Doesn't matter how much of their army is intact, losing their last city, or losing both their last FMs will kill the faction.

This does indeed sound like the FL/FH bug.

Originally Posted by Carl Jung was right

What happened was that I was besieging the last Macedonian city, with its FL and FH sallying out to fight me, with an additional army supporting them. Winning that battle would have (probably) caused the elimination of that faction. However I'm not sure about this, since they still had about 2/3 of their army intact. If their units went back to their city after the battle, I would have had to simply retreat, as I had no means of continuing the siege.

If you can remove the FoW and take a look at Makedonian army composition, that would help. I will bet that the FL (Antigonos) is inside the city (and will thus die when the city is captured) while the FH is leading the army outside the walls, and so survived the combat. That is the classic identifier of the FL/FH bug.

*Sometimes* you can get a different result by attacking the FH stack with another unit first, but it's not guaranteed. The only certain solution is to abandon the current siege since every battle is going to produce the dead FL, living FH CTD situation. Then you'll have to take an approach which ensures that either both the FL & FH are killed during the faction destruction, or both survive, or the FH dies while the FL lives.

Originally Posted by Carl Jung was right

EDIT: A friend of a friend of mine asked his lawyer, who operates from Vanuatu and has diplomatic immunity, to reproduce the exact same conditions with the 4gb patch applied to his kingdoms and med II executables. He in turn reported the exact same problem. I'm only posting this data for information purposes, not to promote any criminal, communist or terrorist activity. In fact I absolve myself from claiming I wrote the preceding three sentences, which I have produced by automatic writing with no conscious input of my own.

10/10