OculusPlatformUtil: seeing "Waiting for processing to begin..." quite a bit now

I've been using this newer oculus-platform-util.exe command-line tool for several weeks now, and only had it get stuck on the "waiting for processing" message a handful of times - in which case shutting down the tool and trying it again always did the trick.

Now I'm just getting stuck on that message over and over.  Is the backend down or backed up?   How long should I actually be waiting at this step?

Thanks for any help!   Other than this issue, I absolutely love this tool.  :)