I have created an app that I can download via the https manifest on my ipod touch (old device but with latest iOS 6.1.6 for ipods). However, when I try to download the same app via the same link on my iphone 5 (iOS 7.1) or ipad mini (iOS 7.1) it downloads the app but just as it is finishing the download or right after, it give an error message that the app could not be installed at this time.
Any ideas?