Is this a bug or some kind of game event/spell?

So I'm on turn 261 as the Amurites on the Erebus map, after a few years away from Fall from Heaven 2.

I'm using base Fall from Heaven 2 with patch O, and also the More Naval AI modmod. That's it.

Suddenly my production, food, science and tax have dropped to 0 in every one of my cities. I didn't see any event notification or anything that might explain it. Basically my cities have stopped growing, buildings take hundreds of turns and technology research has ground to a total halt. No money, science, food or any other main resource coming in.

I can't tell if the AI civs are affected or not, and I've skipped ahead around 20 turns but the effect still lingers.

Any idea what the hell this is?

 

Never mind chaps, it turned out to be the Illian World Spell - Stasis.

It halts all production and research.