My project with Cocos2d-X v3.1 compiles and runs fine. However, it started to put out warnings/errors with red line and can't drill down to it with Command + Click. Also, in Xcode 5.1, it has no issue. Attached screenshot shows the error. Any configuration that I need to change to remove this annoying warnings? I'm using Xcode now cause I can't stand this thing. Thanks!!