Thanks for the link to the download site. I had the exact same problem with my 963, but it wasn't readily reproduceable. I contacted B&K and received a software upgrade for my Ref 50 just last week thinking it was on the preamp side.
What kind of sonic/video gains did you experience with the BlackGate? It seems to be a very popular upgrade.
Do you know how to determine which version of the firmware a player is currently running - or did none of the units come with 24?
Thanks,
Russ