Default project fails to compile?

I just installed a fresh copy of UE 4.8, and upon creating a default C++ vehicle project, it fails to compile…

This is the error that’s posted:

The project could not be compiled. Would you like to open it in Xcode?


Running Mono...

Setting up Mono
/Users/Shared/UnrealEngine/4.8/Engine /Users/Shared/UnrealEngine/4.8/Engine/Binaries/Mac
Compiling with Mac SDK 10.11
Parsing headers for TestVehicleProjEditor
Reflection code generated for TestVehicleProjEditor
Performing 9 actions (6 in parallel)
[1/9] Compile TestVehicleProj.h
In file included from /Users/russjr08/Documents/Unreal Projects/TestVehicleProj/Intermediate/Build/Mac/UE4Editor/Development/TestVehicleProj/TestVehicleProj.h:4:
In file included from /Users/russjr08/Documents/Unreal Projects/TestVehicleProj/Source/TestVehicleProj/TestVehicleProj.h:6:
In file included from Runtime/CoreUObject/Public/CoreUObject.h:7:
In file included from Runtime/Core/Public/Core.h:16:
In file included from Runtime/Core/Public/HAL/PlatformIncludes.h:43:
In file included from Runtime/Core/Public/Mac/MacPlatformIncludes.h:26:
Runtime/Core/Public/Apple/ApplePlatformFile.h:39:15: error: 'IterateDirectory' overrides a member function but is not marked 'override' [-Werror,-Winconsistent-missing-override]
        virtual bool IterateDirectory(const TCHAR* Directory, FDirectoryVisitor& Visitor);
                     ^
Runtime/Core/Public/GenericPlatform/GenericPlatformFile.h:186:16: note: overridden virtual function is here
        virtual bool            IterateDirectory(const TCHAR* Directory, FDirectoryVisitor& Visitor) = 0;
                                ^
In file included from /Users/russjr08/Documents/Unreal Projects/TestVehicleProj/Intermediate/Build/Mac/UE4Editor/Development/TestVehicleProj/TestVehicleProj.h:4:
In file included from /Users/russjr08/Documents/Unreal Projects/TestVehicleProj/Source/TestVehicleProj/TestVehicleProj.h:6:
In file included from Runtime/CoreUObject/Public/CoreUObject.h:7:
In file included from Runtime/Core/Public/Core.h:16:
In file included from Runtime/Core/Public/HAL/PlatformIncludes.h:43:
In file included from Runtime/Core/Public/Mac/MacPlatformIncludes.h:26:
Runtime/Core/Public/Apple/ApplePlatformFile.h:40:15: error: 'CopyFile' overrides a member function but is not marked 'override' [-Werror,-Winconsistent-missing-override]
        virtual bool CopyFile(const TCHAR* To, const TCHAR* From);
                     ^
Runtime/Core/Public/GenericPlatform/GenericPlatformFile.h:218:15: note: overridden virtual function is here
        virtual bool CopyFile(const TCHAR* To, const TCHAR* From);
                     ^
2 errors generated.
-------- End Detailed Actions Stats -----------------------------------------------------------
ERROR: UBT ERROR: Failed to produce item: /Users/russjr08/Documents/Unreal Projects/TestVehicleProj/Binaries/Mac/UE4Editor-TestVehicleProj.dylib
Total build time: 74.96 seconds

My guess is that you are using Xcode 7 with OSX 10.11 which is not supported by Unreal Engine 4.8. You will have to update to 4.9.2.
For more details see: