I’m playing the “Related Videos” linked from the “Get Started with UE4” wiki page: https://docs.unrealengine.com/latest/INT/GettingStarted/index.html?utm_source=launcher&utm_medium=ue&utm_campaign=uelearn
When “Editor Basics” or “Actors & Geometry” “Related Videos” links are clicked, the video at the top of the destination page
fails to play. It just displays “An error occurred. Please try again later.”
The problem videos can be played by scrolling down and clicking the first entry in the “Videos in this series” list.
The other three “Related Videos” links function correctly.
I’m seeing the same behavior in both Safari 8.0.6 and Chrome 43.0.2357.81 (64-bit).