JosEPh_II
TBS WarLord
I am using the current patched versio of v37, and in my current game, which still in prehistoric era and I'm "in" about 240-260 turns, barbarians faction is "spawning" medieval era units. So far I have seen Heavy Swordman, and Explorer.
We've had users of Pit's Map report this before. Generally it's a cache problem.
When you Updated to the v37 Patch did you clear the cache before you started to play a new game?