Cannot Rollback to the most recent version of <File>

This error has the following cause and solution:

• Rollback is a function that allows you to destroy permanently all file versions from the most recent version to the version indicated with the �V switch.  However, the version you've indicated in the �V switch is the most recent version and therefore no rollback has been performed.

  Use the ss history <File> command to see if there are older versions of the file.  Then use one of the older file versions with the ss rollback <File> -V command.