I've almost completed the 4th mission, reaching the garrison of the decisive castle, but when I try to pass through it, the game crashes (by the way, the Sorceress is also glitching). That's a shame. I guess I didn't install something correctly?

Added 1 hour 31 minutes later
I unpacked everything and manually placed the files into the folders (bin, data, music, campaign). I launched the game through H5_Game.NCF, and, miraculously, the save file opened. I passed through the garrison, barely defeated Dominick, but the castle doesn't seem to transfer to me (Dominick and one green peasant in it keep respawning like a phoenix). Is this a bug? What should I do?