Why can't I access the potion during the first Defence Against the Dark Arts class?

I was expecting to only be able to use Wingardium Leviosa in the beginning, but in the first lesson where you make the strength potion you need to use a pet to go up the tube and release the key to get out. Since I can't access the spell menu I can't change into a pet.

I also can't drink the potion that I just made even when I press Z like the screen says to do. I called tech support and they want me to try the disk on a different Wii and see if I have the same problem. If so they will replace the disk. Is anyone else having this same problem or have a fix?

Solution 1:

With regards to the pet tube, you cannot get that until after you drink the potion, which unlocks the spell wheel.

As far as the potion is concerned, I have the PS3 version of the game, and I have noticed that my characters have the annoying habit of backing up a step or two when I walk up to a cauldron, which makes the cauldron menu / button disappear. The solution I use is to slowly walk towards the cauldron and wait a second or two before pressing the button, to ensure that the character is not going to move. That solution may or may not work for you on the Wii.

Solution 2:

LOL i was having the same problem with trying to drink the potion. Walk up till it says press Z, then select the one you want using the joy stick and then press Z again. Thats what worked for me.