Stas Boukarev stassats@gmail.com writes:
Version difference means that the elisp part of slime loaded in your Emacs is older than CL part. Did you restart emacs?
I usually find that "M-x load-library slime" is sufficient to reload the elisp part of slime (i.e. every time after I've fetched a new slime, which I usually do when I need to restart the lisp).