Oculus Story Studio’s VR Trailer Source Assets Released!

Whenever I follow step 6 on the readme:
“After compiling finishes, you can load the editor from Visual Studio by setting your startup project to UE4 and pressing F5 to debug.”
I get this dialog.

529177df7f9919ed25ebecdb5e1678f79874b78b.jpeg

I say yes to rebuild, wait 40 min, and it opens the project browser of 4.9, with the project telling me it’s 4.7. I try to open the project, and it tells me to make a copy, I do, and it fails due to a missing dll.

What am I missing?