Hi Henni,
maybe that with AJs Upgrade something is different...
I did a clone backup of my original hd, copied it to another hd ( a different type ! ) and put this into the Audya : Anything EXCEPT the copy-protected styles was working fine.
Maybe that it would work with an identical hd type...
The ketron-usb-sticks can only be used ONCE ! On the SAME HD they can be used more than once.
I tried to reinstall the sticks as well on another hd and on my ssd, I always got the message "wrong serial number". Due to the fact that it´s still the same Audya
the serialnumber of the hd seems to be the important factor.
I fully agree with copy protection, but the way Ketron does it is not the right one !