WDmycloud not working after installing new firmware v04-01.02-417

The error messages you’re getting look very much like the ones I noted here:

http://community.wd.com/t5/WD-My-Cloud/Twonky-Server-database-issues-amp-fix/m-p/827459#M24884

Strangely, this seemed to be fixed by closing the browser tab for the Dashboard, and opening another tab and re-connecting to the Dashboard.  I have no idea what made me try that; annoyance at the series of repeated error messages, probably, trying to shut the thing up in exasperation…

I know it’s a long shot, but it’s so simple, it might be worth trying…

Oops… It looks like you’ve got over those errors; I should read the whole thread before replying…