I have compiled source code on Windows 7 64bit just like in instructions. Now after launching UE4Editor and basic project with chairs and table, everything is working smoothly but after 5-10s editor closes/disappears without warning even when I do nothing.
What could it be?
Can you attach the latest log file from your project (Documents/UnrealProjects/ProjectName/Saved/Logs) so that we can take a look at what is occurring prior to it closing down.