Hi,

The issue is a faulty error handling in gnome-settings-daemon that
accesses an unset error variable.  Since this a pretty high priority
issue in my opinion and upstream has not answered yet I suggest we apply
the patch on our end to fix the issue for our users.

That said, the root issue is bigger (missing screensaver service) and I
will look at it next.

I’m sending the patch as a separate e-mail.

Have a nice day,
Noé