[hashtagmaster]

I am trying the uninstall, Rclean, reboot and reinstall method now to see if it works. For me ISTA was failing at the fault scan process and gave me the error. When I then go to software update, it says the vehicle test was not carried out. Because it has an error when doing the vehicle test even though it completes and shows faults.

Maybe mixed versions?

Yes, exactly.. I've already cleaned everything manually via remote maintenance.. Unfortunately, it's always the case that most people have little knowledge of Windows