Problem with Epic launcher while installing the UnrealEngine

Hi every body!
How the title say, i have a problem with the launcher, it went everything ok, download the launcher, launch the setup, download the Unreal Engine 4.12.5, but it stuck on the installing, it was blocked at 87% and nothing happens, i tryed to restart the launcher, was not opening so i checked on the section “Troubleshooting Launcher Problems”, and i found the way to open the launcher (using the command -OpenGL), after that the install restart but it stuck on 0%, i try to stop it and it blocked after 15 minutes, after that i resume the installation, but it stuck even at 0%.

(sorry for my english, i’m working on that)

There was an update for the launcher today, it solved all my problems, thanks to the staff