Unreal Engine Preview

For some reason I cannot build my C++ project using Visual Studio. I just upgraded from 4.11.2 to Preview 5, and when I try to build my project I get:



LogCompile : error : Failed to initialize the engine (PreInit failed).
Error : Failed to generate code for MyProjectEditor - error code: CrashOrAssert (3)


Should the log files be under AppData/UnrealEngine? I don’t see any.

Any help is appreciated.

Thank you.