[PROBLEM] upgrade to Krypton returns 16.1 after reboot

[jakenl]

Since I knew that last Friday Krypton would be around, I had powered down the RPI the week before and wrote an image of the SD-card to my pc hdd. I therefore can go back to the status of Feb.23, but that doesn't help. I see that I have a non-existing path in my Xbian - Backup - Image location, but it is as with all other settings today: I can change it to an existing location on a USB-stick, but it will be back to the old path after a reboot.

Somehow, after trying multiple things and upgrading multiple times, the screen went black for 5 seconds and all of a sudden I was in the new skin of Krypton. I there uninstalled the addin 'Pulsar' again and everything was fine. However, after a reboot, I was back at 16.1 again. Really, really weird altoghether.