I have a couple of apps on my springboard that when I go into categories and my list comes up, they aren't there. It started when I went to use an app and noticed that it was gone from the original folder I had placed it in. I then used poof and saw that it was turned off. I turned them on and they appeared on my springboard but now I can't add them back it. I tried it on other apps and it works fine. I also tried deleting them, syncing, downloading them again and syncing. Any ideas?