I cannot build my application anymore since I updated Xcode to the new version (Xcode 5.1). the error message is \'Could not build module \'UIKit\'\'. I have the same probl
I met the similar problem. The only difference is that my error is "Could not build module SpriteKit".
I finally solved the problem by deleting all files inside the ModuleCache folder: /Users/YOUR_USER_NAME/Library/Developer/Xcode/DerivedData/ModuleCache Then I build and met errors to prompt me to clean build. I clean the project and rebuild and everything is fine.
I think the cause is that I once played Xcode 6, and it has new modules which missing some architectures (in my case, it is armv7). These new modules pollute the module cache.