Oh, I figured out what I was doing wrong. I was stuck in the room with the key for the double jump chest. At first I couldn't figure how to open the chest so I figured I needed to come back for it later. I tried again, and this time I just mashed a bunch of keys until it opened. Now I have the ability. I was just being thick headed, but maybe add a button prompt over the chest in the future. Thanks for your help.