Kingdom Hearts II No Mushroom at Memory's Skyscraper Glitch?

Hey, I'm having deep trouble getting to Mushroom I at Memory's Skyscraper in TWTNW. Whenever I go there it's not there, and instead normal Nobodies come up [Samurai, Dancers, Berserkers]

Is this...A GLITCH? ><;

 

Well, where are you in the game? Do you have clear save data?

It's not a glitch, I guarantee it.

 

If you havent beat Xemnas (The final FINAL one) then it wont apear there. But I recomend you finish the rest of the worlds first so that when you beat him you will also unlock the ES. (Otherwise you would have to fight him again)

 

Oh, I supposed it was me having to beat him first then make a save file. Thanks, I'll try that now that I've maxed out Sora ><