Beta stopped updating at 1.16.20.50

I've been on beta for a while; worked great from the start.

However, it has stopped updating since 1.16.20.50; I'm stuck there.

Here's what I've tried:

• Waiting a few days
• Ensuring Windows Update is at the latest
• Rebooting
• Forcing updates from the store
• Uninstalling/reinstalling from the store

No luck