HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

When playing beta12, after loading a save file (whether it's a .gm1 or .gm2 file) and passing the turn to both players, a message appears stating that you have supposedly defeated everyone on this land, and the game crashes. No crash file is created.
I've attached the save files that I tried to load, just in case.
With these same save files, it was possible to continue the game on version 2.94 against beta12.
This bug does not occur in HotA.