Hi everyone,
I just wanted to pop in here real quick to let you know that we do not yet officially support Update 3 for Visual Studio. Our goal is to have support for new VS updates by the time they are officially released (Release Candidate versions are not official final release versions). Sometimes we are able to get that support into the Engine early, but as of right now it is not in place.
I brought this up with the individual who will be responsible for making sure support for Update 3 is added to the Engine. He has ** not ** done any testing on this yet, but he believes it should be possible to correct this issue by opening the WindowsPlatformCompilerSetup.h file in source code (this won’t correct it for the binary version of the Engine, unfortunately), and remove 4599 from the table of warnings at the top. Then add #pragma warning(disable : 4599) below the list. It is possible that this may not work since the warning is coming from command line arguments instead of source, but it’s the first thing he is going to try when he starts working on support for Update 3. He also said that he does not believe this edit will have any adverse affect on your game code generation, but stressed again that he has not done any testing yet.
For now we recommend sticking with Visual Studio 2015 Update 2.