I am playing Eador: Genesis late in the campaign on a Very Big World at turn 200 or something like that. After I click "End Turn" the game goes to the Enemy Turn screen with the hourglass and the bar that fills up. When the bar is almost full it freezes and the game hangs there; the hourglass keeps turning but nothing happens. I have applied all updates and the patch for the .var folder, but nothing has worked. Is there a solution for this bug? I don't want to restart the shard.

Never had that happen. Maybe if you upload your savegame somewhere, I can try if it hangs here,too. If it does then its some game bug we can report, if not I can upload the next turn for you.
I "think" we need game0.cmp and map0.cmp from the save folder, if you are playing the first profile.