Any more details? Can you send me the files in %APPDATA%EroDungeons/logs in the discord? And if you can get it to crash consistently, also your save found in %APPDATA%EroDungeons/Saves.
By now I've found an issue where the game crashes if you try to push back a ratkin spiderrider who remains as only combatant. Nothing else so far. The previous version could crash if you hovered the wrong space during combat. So crashes should be less frequent.