Following directions does not mean everything will work. As a guy that
enjoys learning technology I have a habit of just jumping in and clicking
buttons, but this time I actually followed Autodesk directions to uninstall
Civil 3D 2013 because I didn't have time for this not to work. Unfortunately
after following the uninstall document
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=20304823&linkID=9240697
I was still unable to re-install 2013. During the reinstallation the software
thought it was already installed and would not allow me to select the check box
for installation. After uninstalling Civil 3D 2013 make sure you locate these
registry keys before reinstalling the software.
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\7D2F3875000B9040112000060BECB6AB
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\7D2F3875000B9040112000060BECB6AB
After removing these registry keys the software installed properly. Locate
the correct keys for Navisworks, Raster Design, ETC before reinstalling the
Infrastructure Design Suite.
*These keys need to be removed for all 2013 products before reinstalling
products to ensure success. Match the correct key with the software that was
removed.