So to counter the problem I close Scope and re- run the installer and the BNC syncs to a master external clock and works fine.......again
Except: (as of recently) If I close Scope and open it up again the problem appears again and will not sync to the external BNC but will sync to ADAT.
So here are some of the troubleshooting steps I've taken:
After running the installer I copied the ScopeApp folder to a new location and would copy the folder back to it's original location after the problem appeared. Then I went through each file individually and copied each back into the original folder until I located the guilty party.
Lo and behold, it turns out to be the "appearance" file that is being corrupted when I close Scope.
Furthermore:
When I re-run the installer and open Scope up afterwards. Scope will initially sync to external BNC as slave and I can close and re-open.....PROVIDED I do not alter the sizing of the Routing Window.
So if anyone with an external BNC master clock and an Xite wants to try running the installer and check to see if it works (don't alter the Routing Window), perhaps we can provide Holger with some useful info.
(of course perhaps he already did fix it in Scope

Windows 11 64bit Scope 7 Xite-1