I receive an error when opening a dialog box that contains a symbol selection.

Error message: System.Runtime.InteropServices.COMException (0x80040154): Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) You are opening a dialog box that has a symbol selection drop down. We use a component from Autodesk to generate thumbnail images of the DWG files for the symbol selection. In this instance, the component is not installed correctly with AutoCAD. To solve the problem:

1. Disable the Windows User Account Control (UAC).
2. Download the component for your operating system from a link below and open the ZIP file.
   
   64-bit:    adn_autocad_2010_win64bit_utilities.zip
   32-bit:    adn_autocad_2010_win32bit_utilities.zip
   
3. Extract the contents of the ZIP file into a temporary directory.
4. Close AutoCAD and run the Setup.exe file to start the installation.
5. Follow the instructions to complete the installation.
6. Restart AutoCAD and try the command again.

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