Invalid object name 'repositoryNVSD' (89061)

vRanger will not start after upgrading to 5.3.1 (Could not Connect to service).
Following error in event viewer:
vRanger Backup & Replication encountered an error during startup. The exact error message was: Invalid object name 'repositoryNVSD'..

DB upgrade script did not complete.
DB version is updated to 5.3.x.0 but other changes have not been done:
- RepositoryNVSD table is not created;
- 3 columns in Repository table are not dropped.

Run upgrade scripts manually through SQL Management Studio.
Scripts location: x:\Program Files (x86)\Quest Software\vRanger\Service\vRangerProDBUpgradeScripts
For Ranger 5.3.1 following scripts should be executed:
- vRangerPro.5.3.0.0.sql
- vRangerPro.5.3.1.0.sql

Restart vRanger Service after that.

Please, check following KB:

https://support.quest.com/SolutionDetail.aspx?id=SOL90735