Hi! I bought a new Skylander Giant for my son. It does not work when putting it on the portal. A message saying approx "this toy does not work, take it off" comes up. I have tried to reset the skylander as other forums say, but it does not work. Now I was thinking that the giant might not work at all in this game (Spyro's Adventure)... So my question is: is it possible to mix "small" skylanders with the giants in this game?