Why am I seeing “This application does not support this device's CPU type”?

Question

When trying to build and install an application on an iPod running iOS 4.2.1, I\'m seeing the error

This application does not support this device\'s C

Answer 1

This post led me to my answer. Thanks @adig and @masam

I have an iOS 8.4 enterprise signed app that would only work on certain device types when I tried to install it from our internal app store, and it was inconsistent. I wasn't getting any helpful error messages, even from the device console, until I tried to deploy it using the XCode Devices to a 5th gen iPod. It said "This application does not support this device type" which led me to here. I was debugging on a 6th gen iPod/iPhone 6.

I was archiving from a different scheme than I usually release from and I was only building the current architecture which meant that it would only work on a certain type of device depending on what was plugged in when I archived.

So make sure that "build active architecture only" is NO when you are archiving an app to sign as an Enterprise app.