Kingdom hearts: Having trouble in the hundred acre wood, can someone help?

Kingdom hearts: I have the torn page from Atlantis but the new area in the hundered acre wood wont open. It should be Tigger Bounce/Tigger Giant Pot. I even went back to Ariel's Grotto in Atlantis to see if there was a mix up but sure enough the treasure chest I retrieved it from no longer is there/opens. What am I missing?