Failed to install the application on iOS 6.1

Question

I am having a problem installing an iOS application on iphone with iOS 6.1. All provisioning profiles and certificates work fine. The application was successfully installed in previous versions of iOS ie. 6.0.1, 5.4.
I use testflight to download and install the application on the iPhone.

early.

Answer 1

I also had the same problem, but I was able to install .ipa from xcode 4.5, so if you are smaller than this, please kindly update the xcode version.