Hi Rainer,
It wasn't a problem with the dangerous "Delete" key

. Shortly after installing the new version 805.1 (triggered by clicking on the window indicating a newer version was available), the "Kaufmann" folder suddenly disappeared before my eyes, without me doing anything. The folder with the long name is still in place (drive C

. Two subfolders remain: one with VAG.com Vers. 704 (my initial installation after purchase) and the newer VCDS-RKS(-GER) with data from June to early August, I believe (I'm using a different computer now).
As I mentioned, I'm now finding the "Kaufmann" folder with the current data under my user profile in "Contacts." Something seems to have gone wrong. It's also possible that the system reset to the previous day's state moved the folder there.
I also understood that the newer versions were "updates" that would be installed "on top" of the existing software, leaving user-created files untouched. However, the installation process apparently worked differently, resulting in me now having all three Kaufmann versions installed side-by-side, in the peculiar order described above.
Should I (of course, after backing up the logs) delete the longer Kaufmann path and replace it with the new version at that location?
Best regards, Stephan.