I do not have the Vive, and our only troubleshooting tips are Oculus-specific at the moment. If restarting didn't help, nor does enabling the three programs in different orders, I would recommend waiting for the next beta. It will include a fix for the VR checkbox getting stuck in X-Plane settings, and a lot of other improvements. There are still a lot of kinks to work out of X-Plane VR.