When I issue the `slime-quit' command (bound to C-c ESC g) from *inferior-lisp*, I usually get this error in the minibuffer: Symbol's function definition is void: pp-to-string One time I got this in *inferior-lisp*: * ;; Connection to Emacs lost. ;; [End-of-File on #<Stream for descriptor 6>] and this in a separate buffer: You have encountered a bug in SLIME. The communication state machine received an event that was illegal for its current state, which means that the communication between Emacs and Lisp has lost synchronization. The connection to Lisp has therefore been closed. You can open a fresh connection with `M-x slime'. Please report this problem to your friendly neighbourhood SLIME hacker, or the mailing list at slime-devel@common-lisp.net. Please include in your report: A description of what you were doing when the problem occured, the version of SLIME, Emacs, and Lisp that you are using, the Lisp backtrace, if one was printed, and the information printed below: The event was: (:emacs-quit) The state stack was: (slime-idle-state) I can't remember exactly what I was doing, but I was evaluating very simple forms and checking a few SLIME commands such as `lisp-describe-sym'. Previously, I had exited a SLIME session with `(quit)' *inferior-lisp*, and then started a new one with `M-x slime'. My setup is: Debian Woody, GNU Emacs 20.7, CMUCL 18e and SLIME CVS sources updated half a dozen hours ago. Paolo -- Paolo Amoroso <amoroso@mclink.it>