I have found the message – Could not access network location %SystemDrive%\inetpub\wwwroot\” – When I was trying to install Infragistic NetAdvantage on Windows 7. To solve the problem do the followings.
1. Type “regedit” in the Run From Start Menu dialog box to open the “Registry Editor”.
2. Find the following key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\InetStp\PathWWWRoot
3. Change the value of this registry key from “%SystemDrive%\inetpub\wwwroot” or ” \inetpub\wwwroot\” to “C:\inetpub\wwwroot”. If your default website in IIS is instead stored in a different location, set the value of this registry key to that path instead.
Then install your software.