Answer
This error occurs because the dc.exe module is not registrered correctly in Windows Vista when installing IGSS. You can register dc.exe correctly by following this procedure.
- Log into Windows Vista as an administrator.
- Open a command prompt.
- Enter “dc /RegServer” and press Enter.
- Enter “def /RegServer” and press Enter.
This should register dc.exe correctly and enable you to open Definition without the above-mentioned error message.