I have just updated to Windows 10 x64 Professional from Win7 x64 Ultimate. I have the same issue now. I couldn't get anything from CMC except the digital antenna option in Windows 10. This was a fully functional capture system (USB 600 with CMC for mpeg,
Virtualdub for avi) when it was Windows 7. I am now strictly capturing in avi with
Virtualdub. I searched for 2 days trying everything I could find or think of to fix the CMC issue. I have to guess that Windows 10 broke something beyond our ability to work around.