Calling C-x C-e (M-x slime-eval-last-expression) at a bare REPL prompt causes this: The variable CL-USER> is unbound. [Condition of type UNBOUND-VARIABLE] Restarts: 0: [ABORT] Abort handling SLIME request. 1: [DESTROY-THREAD] Destroy this thread (12715) GNU Emacs 21.3.50.1 SLIME CVS 2004/08/13 Cheers, Michael