Error Installing iPhone App on Device

Question

I set up all my certificates and keys today and am trying to run my project on my iPhone. I'm encountering this strange error:

Your mobile device has encountered an unexpected error (0xE800003A) during the install phase: Verifying application

Poking around the Apple Developer forums, I've attempted to set new certificates and provisioning profiles as well as editing Info.plist, but no matter what I do I can't seem to run the app on my device.

The only think I can currently think of is that my project name in Xcode differs slightly from my development provisioning profile (it uses a question mark), but I've named it according to Apple's conventions: com.mycompany.myapp, so I'm unsure if that's the problem.

Any ideas?

Edit: I've hard restarted the phone, rebooted Xcode, cleaed my targets, set up a new wildcard App ID and respective provisioning profile and still nothing. Any other ideas?

Answer 1

It turned out that I had 2 certs in keychain that were simultaneously overwriting each other! I hope this helps people in the future.