I have followed the integration guide (on a new app) from https://docs.urbanairship.com/platform/ios/#urban-airship-sdk-setup and https://docs.urbanairship.com/platform/reference/ios-extension using CocoaPods.
UA is the first and currently the only addition to an empty iOS app (Swift).
The project doesn't compile ("No such module 'AirshipAppExtensions'").
I can't find anything wrong with this integration.
This is not the first time I integrate AirshipAppExtensions in an iOS project - had no issues earlier.
Here is a test project that demonstrates the problem: https://drive.google.com/a/mobaxe.com/file/d/0B27u_KdIfsrYOE4wVzZXcnZlODA/view?usp=sharing