I can't seem to get this puzzle done.

I've got level 2 in all tech and in magic faction.

When I put the chief and 3 builders (2 adept, 1 master), the chief starts the weather dance and the 3 builders start to dance poorly as the guides said. But nothing happens. There is no rain and the puzzle isn't complete.

Did I miss something? The only thing different from the guides was that I had 1 master and 2 adepts instead of 3 adepts.