Kazoo Server not updating

Hi

I've got Konfig to accept beta versions, and I'm currently running Kazoo Server version 4.2.450.0.
I'm now getting an update message, saying that version 4.2.473-Beta is available, and offering to update.
However, once it's done updating I'm still on 4.2.450.0 and I'm still getting update notifications...

Any thoughts?

Mick