Blaine not appearing?

I've gotten to the seafoam islands and beat all of the trainers in Blaine's new gym. There is a big empty space in the middle with four torches on the corners where I assume Blaine is supposed to be standing. He is suspiciously absent. What can I do? Is my game glitched?

I have the magnet pass and done the suicune event, also i have the 6 previous gym badges badges.

This is all in the Soul Silver PostGame.