Windows XP SP3 users should install Vectir server version v4.0. Important! You will also need to turn off the auto-update under "Tools > Option > Automatically check for updates" to make sure you keep using version 4.0.
Important! Version 3.4 is not the latest version of the Vectir PC software and should only be installed if you are running Windows XP SP2 or earlier or are unable to install version 4.0 of the Microsoft .net framework.