Are you using a wired or wireless Portal? Is the portal of power on a metal or magnetic surface? Are you using the Portal that came with the Skylanders Giants game and not the one from Spyro's Adventure? Have you tried different areas on the portal (I.E. On the sides or in the middle)?
Therefore the problem is not solved until now I thought I could call for help too.
I bought just today the Skylanders Giants Starter Pack for Wii U.
The game starts, but the Portal doesn't recognize any of the included heroes. The portal is wired. no metal or magnetic surface nearby.
Help me please!