hi!
fyi, without these lines in swank.lisp (or something equivalent):
(defun after-saved-image-initialized () (setf *log-output* nil) (init-log-output))
#+sbcl(pushnew 'after-saved-image-initialized sb-ext:*init-hooks*)
trying to start a swank server after loading a saved image where swank has been loaded in before saving, dies an ugly and not too helpful death: https://bugs.launchpad.net/sbcl/+bug/444427