UBT refuses to build my project because one of the headers I have included causes a warning. Is there a way to disable to compiler flag without rebuilding UBT or the engine with vs2013?

The approach we normally take internally if we absolutely cannot fix a warning is to add: #pragma warning(disable: <warning code>) Before the offending header. We don’t generally run completely without warnings. If you still want to check for that warning in other code you may want to wrap it with…