did a clean install of Sierra then updated to C9 then C9.0.3 and when I open Reverence I get " cannot find Impulse Files"
Where are these supposed to be and why have they not installed correctly?
I would recommend downloading the full installer from your MySteinberg, installing that then reinstalling the 9.0.30 update.
This should fix your current issue while also making sure that nothing else is missing.