The following best practices/steps will ensure the service start and stay running.
A. Review the corresponding app-system.log or bg-system.log to find out the exact error.
B. Make a copy of the properties.xml file. If changes are recommended, the backup will exist if the properties.xml file gets corrupted.
-Remove any invalid parameters specified in the app-system.log or bg-system.log
-Restart NSA and affected app/bg service to see if problem persists.
-Repeat as necessary until all services restart and stay up.
C. Be sure the file system is copied in whole with no missing or mismatched file versions before upgrading.
If needed, use the file system provided by Broadcom in rule out any missing or corrupt files.