Are you about ready to jump from the top of an extremely tall building after encountering this error?
Well, you’re not alone. I struggled with this monster for about two weeks before getting my test application to run on my device, and the way I solved the problem was different than what I had read elsewhere online.
Check Keychain Access. Your certs are there, right?
Great, but you knew that already. So check one last thing.
Do you have two certs in keychain that could possibly be overwriting each other?
That’s what turned out to be the case for me. I deleted the unnessecary cert and the app magically installed itself on my iPhone.
Hopefully this helps!

