So here's the method I used (I've simplified it, but hopefully you
should be able to follow)Kill all process and services relating to
Oculus in Task ManagerCopy out the support files (saving them in another
folder for now)Support files can usually be...
Somehow managed to get it working using that method. Replace the support
files with the older ones, completed setup without a problem, then put
the newer support files back. All sorted!
I've read that Oculus are aware of this issue and they're working on a
fix for it. There's a thread somewhere which details a temporary fix
which I'm going to try later, so will post back here if I get any
success!