Replay works but No Slow play option.

I recently bought a new laptop and had to transfer everything I had on my old one to the new one. Everything seems to be working fine but I have noticed, the replay Lua is there and working but the option to hotkey slow motion is completely gone. I've re-installed, I've deleted the replay sources and loaded them again but it's still not coming up.

Anyone got any ideas on how to fix this?