Hi m_c,
I you get a chance please try these newer signed drivers within this Test Release:
http://dynomotion.com/Software/KMotion434a.exe
(Note you don't have to use the Test Version to use its Windows Drivers).
There still may be a red warning but they should load and work regardless. The security catalog for these drivers has been signed by Microsoft. But for some reason when Microsoft signed it they seem to have removed all the OS Attributes except for W10. We think that is why there is the warning.
Regards