I have a licensed copy of Heroes of Might and Magic: Excalibur. Everything is great, and as far as I understand, it includes all the expansions, but there's one problem. In the "Armageddon's Blade" expansion, there are several buildings where you need to defeat a monster with a hero (I'm still not very familiar with them).
So, if you enter these buildings in the game, it crashes. It wouldn't be a big deal if the AI crashing when entering these buildings didn't cause the game to crash as well.
When installed separately, this expansion works perfectly.

So, if anyone knows where I can find a patch or can provide files that will help fix this problem, I would be grateful. If the file is large, I can extract it separately from the "Armageddon's Blade" expansion.
I just don't know what needs to be fixed and why this bug occurs.

I WOULD BE GRATEFUL FOR ANY INFORMATION!
If you need any more information, just ask.
REINSTALLING DOESN'T HELP; I've tried it several times.

THANK YOU IN ADVANCE!