Oculus Touch buttons do not work once I've packaged my project into a exe?

I have a Oculus Rift project that works great while running in the Unreal editor, but once I’ve packaged it into a win 32 project the touch buttons (A, B, X and Y) do not work, but the triggers do?

I’m using Unreal 4.21 and I’ve set up the button mappings in C++ with PlayerInputComponent->BindAction etc. For testing I also have keys mapped to the same actions and these work fine while running the exe, it’s just the touch controllers buttons that do not work.

Does anyone have any thoughts on why my buttons do not work unless I run it from the editor?