# Why does compiling Unreal Engine fail in Xcode on OS X?

I'm following Ben Tristem's latest course on using Unreal Engine and coding in C++. I have issues getting into Unreal however: when I create a project, it does its stuff, i.e. generates code, compiles it etc. but then I get this message:

I tried to open it with Xcode but I don't know what to do next… could someone help me out?

• Which branch did you pull the source from? Feb 3 '16 at 10:04
• I don't understand...all I did was start a new c++ project and opened it, then this happened... Feb 3 '16 at 18:23
• Have you tried a different version of the engine, it looks like it's just missing the override keyword which that compiler requires but MSVC doesn't, so they often get fixed up later. Feb 5 '16 at 10:06

Otherwise you could just try to edit the method declaration in the error to override. See http://en.cppreference.com/w/cpp/language/override for reference.