I created a tabbed application with xCode 5.01, recently downloaded from Apple, and put nothing else in it. It runs fine on the simulator, but when I try to run it on my iPhone 4S, which has OS6 on it, the build fails with these errors:
UIKit/UIKit.h is not found.
The Prefix.pch file is not found.
I looked everywhere and changed the deployment target to 6.0, but it doesn't solve the issue. What's going on?
EDIT: also, following an advice, I deleted the UIKit framework, but when I tried to re-add it (as per the advice) it turns out it's not there.
EDIT 2: Reinstalling xCode solved the issue. Go figure.