Version Update Unavailable

I understand a new Version 4.1.19277 is available. An invitation to upgrade appeared on my traybar for a few seconds, but it disappeared before I could respond. I’ve been unable to find this upgrade anywhere else. Is there any way I can get it without completely reinstalling CIS?

Have you tried manually checking for updates from within CIS?
More/Check for Updates

Yes, done that. It doesn’t work.