is it a network drive? Error 4350 seems to mean that the drive or folder are off line. MyDocument is a system folder and the installer (we use Caphyon Advanced Installer) maps to whatever the OS says it’s MyDocuments.
You can also try to install keeping all VS options off. Then add the templates by hand but you need to find the location where VS puts the templates. You can download the templates here: http://setup.wisej.com/Templates.zip