Issue: The ShipRush Service is missing from the Service Control Manager.
To reinstall the service, open a command prompt using Run as Administrator. Then go to the ShipRush program directory: C:\Program Files (x86)\Z-Firm LLC\ShipRush v12\
Enter this command: shiprushserver -install
Now refresh the Windows Service Control Manager, the "Z-Firm ShipRush" service should be present.