Thanks, I tried the debug version, but no change - the capture seems to work, but the "Make Borderless" and "Hide Title Bar" etc. commands make no change...
Additionally, I had also previously used the Matte dark theme (not at the same time) from thread:
http://duc.avid.com/showthread.php?t=413059
...but now, even that theme doesn't work, the title and menu bars remain unchanged...
I did not create a restore point unfortunately;
Is there a Registry Key I could edit to revert to before Borderless Pro Tools?