Posts from The base game of Heroes of Might and Magic V won't launch. Auto-translated

HoMM5 GE: I installed it, and it runs fine. I create a profile, start the single-player campaign "Queen - Mission One." A menu appears: "Normal Game, Duel, Duel 3x3." When I click on any of these options, nothing happens – the game doesn't start. The Hammers of Fate and Tribes of the East expansions run normally. Why is this happening?