Xcode LLVM 6.0 Error

Question

i have problem about compile iOS default project source. i registered apple developers site to test my app in iPhone. after finish registration, i try to launch app but when i build LLVM 6.0 error occurred.. when create app if i select swift language, compile is successed. but if i select object-c "LLVM 6.0 Error" error occurred. my dev environment is Xcode 6.1.1 / iOS 8.1.2. i attached my error screen shot. how can i solve..

Answer 1

Quit Xcode. Clean out the DerivedData folder as I explain here: https://stackoverflow.com/a/6247073/341994 Restart the computer.