I have recently tried multiple times (5) to install AutoCAD Civil 3D on my new computer (Windows 7 Professional, 64 bit). Every time I try to install it, it doesn't automatically give me the AutoCAD setup window. (also, between each attempted install, I have uninstalled it following the instructions given on the autodesk website.) When I open the setup application in the program files, it says I have already installed Autocad. Then it gives me the option to install Autodesk Storm and Sanitary Analysis 2012. If I tell it to install, it installs that program and seems to work fine. However, when I click on the AutoCAD Civil 3D icon in the Windows start menu, the error message "adui18res.dll not found" pops up. I have tried installing both the 2011 and 2012 64-bit versions but have the same result. I can see the adui18res.dll file in the program files. Also, when I go to uninstall the program in the control panel, I get a message that states that the program may already be uninstalled. I had my virus software completely turned off during the installation. Does anyone know what else I should try?
Installation problems may be resolved using the Microsoft Installer Clean Up Utility. For more information on this program, please my forum post here:
Please be sure to read about the 1402 error after using the Cleanup Utility on Windows 7.
For more information on the Autodesk KB Support article concerning the clean uninstall of Autdoesk products, see this link: