I tried playing though a large map today.  I ran into three problems.  First, the flame wave (tactical spell that hits all enemies) stopped causing damage.  I tried several times, but it never began to work again.  Next, the winter and earth wildlands refused to disappear.  I had cities on three sides of each, and had scouted around.  I found no quest tiles, no monsters, and had defeated the elemental in each.  Abeix also was bugged.  He used fear and then my army and him just sat and looked at each other, saying it was his turn.  The third bug made tactical combat go strange.  An enemy would be reduced to 0 hp, but would still be present in the side bar.  This would cause the battle to stop as the computer tried to find the unit.  The only work around i could find was to auto-resolve, which wasn't bad because i was playing a game to experiment with, so the ai wasn't a challenge, but if i had been facing an evenly matched opponent, this would have really broken the game.

Sorry for the long post, and keep up the good work.