Xcode version 4.6.2 (4H1003) compiler error

Question

I just updated to Xcode version 4.6.2 (4H10003) and tried to run a previously working application project in the simulator and received the following error and the build fai

Answer 1

Specially if you build from command line or you have a build script, cleaning xcode target is not enough. You have to delete this folder.

The exact location of precompiled header can be found in the project, part of the folder path is random (I guess), esp after /var/folders/xx..xxx/C.

Target -> build settings => "Build locations" -> Precompiled headers cached path

Run Terminal and go to this folder and delete (use command),

#rm -fr SharedPrecompiledHeaders