When you click on Finish, the Wizard may put up a message saying "Your computer needs to be restarted before VersionSaver can be run. Do this now?".
You can say No to this message and wait until you reboot the computer at a later time, but until the computer has been restarted, VersionSaver will not be protecting and saving your file versions.
If a message is not displayed, that means that a reboot is not necessary on the version of Microsoft Windows that you are running.