Hi there!
I just subscribed and recieved the UE4 engine installer, tried to download, and after successfully downloading, tried to open the launcher. However, nothing happens when I try to open it, and in the task manager, I only briefly see a process (4-5 seconds) before it vanishes.
Thanks for the help!
EDIT: The problem turned out to be uninstalled graphics drivers for my new graphics card!
Cheers