Endless Runner Tutorial is a bit too Endless when packaged for Windows.

[anonymous_user_cd056f2b1 (anonymous_user_cd056f2b)]

Here’s a link to an image album of 3 pics:

http://imgur.com/a/qclyN

The first is the game working in editor.
The second is the blueprint for the EndTrigger creating and destroying floor tiles.
The third is the blueprint for RunGameMode’s initial creation of floor tiles.