fatal error: malformed or corrupted AST file - Xcode

Question

I get this error when building my app in the latest version of Xcode:

fatal error: malformed or corrupted AST file: \'Unable to load module \"/Users

Answer 1

I got same error on executing xcodebuild command of Xcode6-beta5.app coexisting with Xcode.app (Xcode 5).

In this case I added -derivedDataPath to separate ModuleCache from the one for default Xcode.app.

  xcodebuild -derivedDataPath ./build/Xcode6-beta5/DerivedData ....

This works for me.