In the default installation of a 64-bit Windows 7, there are two versions of Internet Explorer installed, (one 64-bit Internet Explorer and one 32-bit Internet Explorer).
The 64-bit version of Internet Explorer does not support AktiveX components.
Our DMK component is only compatible with the 32-bit version.
Here is a little instruction how you can run the 32-bit Internet Explorer on a PC with installed Windows 64-bit version:
It may be that the DMK component is not installed correctly, (if you have installed DMK from the 64-bit Internet Explorer).
To be on the safe side uninstall the DMK component and reinstall it from the 32-bit version of Internet Explorer.