Something else may be wrong, I was able to launch WOM.exe without using revive. It just didn't work with my vive. Looks like the input re-mapper stuff is still in beta, you might have better luck switching your steam VR to beta. In your steam library right click SteamVR > Properties > Betas then select the beta in the dropdown. No guarantees
Viewing post in Walk-O-Motion VR With Physics comments
Guys, I think the problem is actually Unity's own Input system.
I've swapped it out for OVR (Oculus' plugin) so I'm assuming this should fix ReVive problems.
The game should run regardless, it's only input that won't.
Even without a VR headset the game will load up, so if you're not getting the launcher then there's some other problem.