You see, the dream world is activated by this link http://www.pokemon-gl.com/ in conjunction with your DS option
However, the site part (the one that matters) is still not fully functional, I don't know when it will be up either
I'm having the same problem as the guy who can't battle, what's stranger is that I can't play it with my acekard but my friend with the exact same rom has no glitch.
Is there something I've done wrong in-game, maybe?