How do I enable the Oculus Rift in a Packaged Game?

Thanks for the help, . I removed all “Event Begin Play” nodes out of the level blueprints, and replaced it with an "Event Begin Play → Command (Fullscreen) in the Game Mode event graph. It’s still random. Works on the first level, and on one other, but fails on the other two. Any other thoughts? If I change the resolution in the editor preferences, that doesn’t change the build resolution, only the editor resolution, correct?

Barry