Hero Splitting

We pass the turn to blue. It's the turn of the hero Voy. We don't press anything.
We press "H" - the turn is passed to Pasis.
We press "H" - the game crashes (the turn should have been passed to Vidomine).

This is an example of where to set a breakpoint when debugging.
In general, it also crashes on Voy's turn if she is sent to a certain cell on the map.

I have Windows 2000 (Heroes 4.0, English Version). I checked on XP (Heroes 4.0, Russian Version) - it also crashes.

Is this data already from my save file?

vbn, please send another working save file from the previous day.

The problem is not with the heroes, but with the castle... something strange happened to it....
1) It's not on the mini-map.
2) If you click on the mini-map where it is supposedly located (I don't know where it is, but I click on the lower left part of the map), the game crashes.
3) Even if you open the map during the red player's turn using a cheat code and click on the mini-map in the blue area, the game will crash.
4) Apparently, Voy is in a "bad" area.
5) I just tested it, and the red player doesn't even need to open the map; simply moving around in the dark will cause the game to crash