Some point yesterday afternoon I turned on my iPhone... woke it from sleeping... and I had three apps not responding, they were working fine in the morning. I'm thinking its because they're outdated. Sure enough, when I connected my iPhone to my MBP it went to the screen that shows whatever the device is that you hooked up to your system. I had to update the apps that didn't have an icon. My question, is that normal to have no actual icon but a grey square and I think under the squares it said 'thinking...'. Thank you.