You must run the updater executable from an account with Administrative privileges, or it will not work.
To do this, log out from Windows and log in again as an Administrator. If you are still having trouble, contact your system administrator for help.
A printed copy of the User Guide is included in every Voyager 4.5 retail box, and a PDF copy is included with the downloads above.
Make sure you install the update in the same folder where you installed the original Voyager 4.5.
The latest release of Voyager 4.5 is version 4.5.7, released May of 2010.
To install this update, you must already have Voyager 4.5 installed on your computer.
For example, if you installed Voyager 4.5 in the /Applications/Voyager 4.5 folder, make sure you also install the update in the /Applications/Voyager 4.5 folder. The Windows version of the update is an executable file.
After downloading the file, double-click its icon to launch it, then follow the updater's onscreen instructions.