GPGnet Full Installer v1.5.225
http://thevault.gaspowered.com/gpgnetdo ... .5.225.zip

First, unzip the contents completely. Then run Setup.exe (Not GPG.Setup.msi or GPG.Setup).

::NOTE::

If you are in a situation where you are only trying to reinstall GPGnet and not Supreme Commander, please make sure you have done the following;

1) Uninstall GPGnet via the Windows add\remove programs option.

2) Navigate to the c:\program files\THQ\Gas Powered Games directory and remove the GPGnet folder.

Vista users, after install, make sure you run the GPGnet client as administrator the first time.