Upgrade = Stats disappeared from my admin home page.
When I accessed the Plug-in it generated a full page of "Warning: Cannot modify header information - headers already sent by......" errors. I disabled the plug-in and re-enabled, still a few errors "Warning: fclose(): supplied argument is not a valid stream resource", disable and re-enabled again and the reward is I had to re-authenticate with WP.com. Working now, hopefully fixes the "sorry nothing to report" bug.