Hmm! That's very odd. Are you running any other software as well as ReVive? Anything with your keybindings?
Hi! Pardon the delay, I've been away over christmas. I thought I fixed this issue with update 4, but apparently not! I believe it's an issue with the build of Unreal that this program uses. Rest assured, I'm working on an update in a new build that -SHOULD- fix this. I'll put out a big post as soon as it's ready.
In the meantime, is your issue exactly the same as the original posts, where none of your buttons do anything?