photos don't appear on other devices
photos taken on new iPhone 6 don't appear on macbook and/or ipad
MacBook, iOS 5.0.1, iphoto 11
Are you using the steps mention in this article to transfer the photos?
Sync photos from your computer to your iOS device using iTunes - Apple Support
Are you taking photos in HDR mode? If yes, try to disable HDR and test if you can sync the photos back to your iPad.
Troubleshooting for Photo Stream is covered in this article: