Lots more info here on the Y2K24 bug -

http://www.film-tech.com/vbb/forum/main-forum

Expired cert. Some players refuse, some ignore it.

Affected - Sony (XCT-M10) / GDC SR-1000 - "15-08-2011 18:10:59 UTC 31-12-2023 00:00:00 UTC (expired)"

There was a known Y2K24 bug that needed software updates to fix around certs, unsure how/if related -

http://www.film-tech.com/vbb/forum/main-forum/26517-dolby-do...