Tech Question

[Guderian]

Scenario is Showdown at Borrisov, a huge size 10 scenario, played as 2v2 team game.

Game is started with FOW and all options on except VV and EA. Russians move first, end turn and email bte file to opponents. Both opponents are unable to watch replay, i.e., replay crashes game. Opponents are able to save turn without watching replay, but during their turn, they are able to see all Russian forces.

Question: Is this a hardware or software issue and how can we fix it? My guess is that the game file was corrupted. If that is the case, will the corruption repeat itself after each end turn going forward or should it, generally, be an isolated event? If it's a hardware issue, can it be fixed by downloading drivers or changing video settings?

All help is appreciated.