"HW rulez" mod (add-on) for HoMM3.

Perhaps I'll write here. Situation: we started – I'm on 3.808(7), 1.38. Opponent – host, version unknown, 1.38. The opponent saves on his side. I suggest loading mine – to test, then his – to play. When I generate a session under 1.38, saves from games without rules are visible. When I generate a session under 1.34, saves from 1.38 are visible; the opponent logged in under 1.34. When loading, it crashes. When trying to join him (latest mod v.vv), 1.38 rules: it doesn't let me in. Here's the print of the rejection,