Hi,
We can't seem to get a CANtieCAR v3.1 interface installed on a Windows 8.1 (x64) machine.
The flash drive / sd card installs ok, but the USB drivers for the AT91 serial port fail to install as they are not digitally signed.
I've tried the latest drivers you list (v2.08.14) but they still give the same error - "The third-party INF does not contain digital signature information".
Do you have digitally signed drivers available which will work with Windows 8.1?