Add spaces: IfyourPCopenstheV18file,butit'sthewrongapplication,you'llneedtochangeyourWindowsregistryfileassociationsettings.Inotherwords,WindowsisassociatingV18fileextensionswiththewrongsoftwareprogram.
If your PC opens the V18 file, but it's the wrong application, you'll need to change your Windows registry file association settings. In other words, Windows is associating V18 file extensions with the wrong software program.