I get dozens of alerts a day, 99% are errors or problem of users.
I can tell you my experience: When something does not work I always start from the assumption that I'm wrong, I make test with more USB and with more PC. Users start of the assumption that they don't wrong.
- More time i've solved formatting the USB with RmPrepUSB
- More time I've solved with one scandisk of partition when I use SARDU.