Starting with SDK 6.11 we are signing our kernel driver with a SHA-2 certificate. Microsoft is phasing out SHA-1 certificates. Unfortunately Windows 7 as it was originally released did not support SHA-2 certs. There is a patch which was released some time ago and you should have it on your system if you have automatic updates turned on. However, we understand why a machine vision system might have automatic updates turned off. The simple solution is to install just the following Microsoft patch, this will fix support for SHA-2 certs.
After you install this patch, reboot your system and the driver should work.
We are sorry about the inconvenience this has caused, but Microsoft is really forcing our hand here.
This problem does not exist on Windows 8 and 10.