Downloaded latest source, built with no errors. When I run, I get an error about a plugin called Lumin/MagicLeap/…/UE4Editor-MagicLeapHandMeshing.dll is either not designed to run on windows or contains and error.
Hitting OK tells me "Plugin ‘MagicLeap’ failed to load because module ‘MagicLeapHandMeshing’ could not be Loaded.
I kept having one issue after another trying to delete stuff in intermediate and rebuild, etc. I ended up deleting the entire Unreal Engine folder, re-downloading and starting over. After 4 hours it finally built and is running fine again.