Need help on "Old Friends" campaign on Age of Mythology

Hi. I hope someone can help me. I am stucked at the "Old Friends" campaign
for weeks. I managed to collect all the pigs, became humans again, built an
empire and flatten every brick on the island, kill the Circe witch and every
building I can see but there is no victory message or "You are victorious".
The army I have built and all heroes wander everywhere on the island looking
for anything to destroy but there is nothing left (I even destory the rock
near the starting point).
Anyone who knows what's gone wrong, I would appreciate very much.