Hi,
I tried several times to delete the software Direct Show Driver completely, Restart PC and download a fresh version from your page. It won't correct the bug.
I tested it on two PC's. I got no clue about it.
The strange thing is that all my cameras including the ASI120MM-S are running perfectly on PC with ASIStudio, Firecapture as well with ASIAIRPro.
It is just the ASI120MM-S which does not run with Direct Show Driver.
Anything else never had issues with all my ZWO cams.
I got installed all necessary drivers for ASCOM, Windows and the Drivers for ASIStudio.
I contacted directly over the help link in Direct Show Drivers the webmaster@noeld.com, which replied me following,
Quote:
Version 9.01 is very old and one of the first version ever released, it is not supported any more. Please test drive the free demo version 9.23 at http://noeld.com.

Strange is that the Direct Show Driver after installing is called AMCAP, and the answer from the gentleman above.
Iv'e got no clue whats going wrong.
Clears skies,