I have about 35 devices in the section Human Input Devices in the device manager. Most of them have generic or the same names. Hard to identify. Feels like Russian roulette to disable them, maybe tomorrow.

And in the mean time I got my first "exception error" while saving the config in PEPv3.

I have spent a few hours with reading threads about this issue.
And I found a small section in the help directory about the Pronto being a mass storage device.

But enough for today, a whole day is lost already :-)