Thanks for your help. I had to change the email address for my Apple ID and iTunes store account. After changing it I went to the App Store with my device and could buy another app, no problem. However when I connected the device to my Mac and viewed my apps in iTunes, they were all gone. I could buy new apps with iTunes but not see my old apps. I sign on to both with the same Apple ID/Email Address and password. What should I do to get my apps from the device to the mac?