Installation

1. CLOSE CIVIL 3D, if it is open
2. Unzip ALL the package files in the same folder
3. Run the installer
4. By default, the plugin installation location is:
   
   C:\ProgramData\Autodesk\ApplicationPlugins\DDM.bundle
   
5. If you change this location, you will have to manually load the plugin in Civil 3D. In this case:
   1. Open your Civil 3D program
   2. Type SECURELOAD on the command line and enter option 0
   3. Enter the command NETLOAD on the command line
   4. Select the compatible dll:

      Civil 3D	DLL
      Civil 3D 2020	./dotnet_4/DDM_2020.dll
      Civil 3D 2021	./dotnet_4/DDM_2020.dll
      Civil 3D 2022	./dotnet_4/DDM_2020.dll
      Civil 3D 2023	./dotnet_4/DDM_2020.dll
      Civil 3D 2024	./dotnet_4/DDM_2020.dll
      Civil 3D 2025	./dotnet_8/DDM_2025.dll

6. Finally, the tools menu will be loaded automatically. If this does not happen, use the command DDMMENU

If the plugin does not load or the help file appears blank:

1. CLOSE CIVIL 3D if it is open
2. Locate the folder where you installed the plugin
3. Right click on the DLL (see compatibility table) and on the help files (./en-us/*.chm), click properties and click the Unblock button (IF IT EXISTS)