Vince,
Are you aware that to get VRS to run from the OGN-R you need to carry out a full software re-install - a simple update doesn’t supply all the files needed - as you have found.
As you have noticed, the current version just updated to 20190327. Updates are now automatic on reboot each morning or instigated by crontab at set times during the day, but you still need to do a full reinstall to get VRS working from the Pi - which, to ensure data security is, I understand, likely to become the only allowed method of obtaining the MLAT data.
Regards
Peter