QVS on TVS-473 doesn't work after upgrade.

For the past 3 months I have been unable to use Virtualization Station on my TVS-473 after upgrading from QTS 5 beta to the GA version that also includes QVS 4. It was working all through the beta period and now refuses to load:

Are there any steps I can take to clear this out and download a working QVS? I’ve already:

  • tried to edit /qvs/qvs.conf to no avail.
  • totally delete anything related to QVS including the share being used for VM data and all the configuration files I can find.
  • rebuilding the app database
    I suspect I’ll need to reinstall the entire firmware to get this to work, but don’t want to take a scorched Earth approach if possible. Your help is appreciated.

Probably best to check with QNAP support if there is an upgrade path for the beta testers