Hello, i buy subscription to UE4, i compile Unreal Engine 4.4.3 from github, but when i try launch Marketplace, i get message: “The Marketplace requires the Unreal Engine Launcher, which does not seem to be installed on your computer. Would you like to install it now?”
i click “yes” and get this message:
“Sorry, there was a problem installing the Launcher.
Please try to install it manually!”
how i can install manually??
Thanks! i’m stupid 
You can find the links needed to download the launcher from your account dashboard at unrealengine.com (see the “Latest Download” section - you’ll need to be logged in).