It's worked previously on the same laptop just fine (that's how I've used it to communicate with the M400 previously) but now it won't.
In Device Manager it shows that the UTC doesn't have the right or properly working drivers. Something like that.
I've uninstalled all the drivers (USB & UTC general pack) and installed them all again.
Tried updating the driver by pointing Windows (W7 64 bit, new install since last time) but it says it can't find a suitable driver.
Tried updating the UTC with the latest firmware, the Start Menu has the link but the util to do it isn't there.
Rebooted the laptop several times.
So I tried the UTC on this desktop PC, everything works fine - there's no way I can use it to talk to the ECU though, unless I have a 20 metre long USB cable, etc.
So what's wrong and how do I fix it please?