Hi Fabian,
as not only the xs client is on the older version, also the controller is on the old level. But the execution agent is already on the new version. You should go back to the snapshot, create the symlink and do a clean fresh installation with 1.0.17.
Because there are already user and worker roles created in the HANA, deleting the xs folder isn't enough and can end up in installation problems again.
Kind regards,
Andreas