I have had this exact difficulty. I have tried with multiple decks and the same thing happens. I select the opponent and the program goes to the loading screen, but while it's loading, it suddenly stops and the game crashes with no explanation beyond "the program has stopped working".
This problem has been going on for months and I have not been able to play it any further than the
Mishra stage because of this problem. Needless to say, it's very frustrating. Anyone have ideas as to why this might be happening or how to fix it?
I'm running Windows 7, 64-bit & I've tried running the game in various comparability modes. Let me know if there's any additional information that you might need. Thanks in advance!