I can't seem to get slime (2011-11-15) to work with clisp (2.49) on windows 7, using emacs 23.3. I followed the instructions in the manual and added the following to my (otherwise empty) .emacs file: (setqinferior-lisp-program "clisp") (add-to-list 'load-path"C:\\Program Files\\emacs-23.3\\site-lisp\\slime-2011-11-15") (require'slime) (slime-setup) I then run slime with M-x slime, which starts compiling in the inferior lisp buffer. Here I get a warning that some swank interfaces are unimplemented. Then a new buffer opens continually spitting out error messages, the buffer is called *sldb nil/0* and its output is shown below. *sldb/nil/0*:         SWANK-BACKEND:WAIT-FOR-INPUT not implemented    [Condition of type SIMPLE-ERROR] Restarts:  0:[ABORT]Return to sldb level 83.  1:[ABORT]Return to sldb level 82.  2:[ABORT]Return to sldb level 81.  3:[ABORT]Return to sldb level 80.  4:[ABORT]Return to sldb level 79.  5:[ABORT]Return to sldb level 78.  --more-- Backtrace:   0:[10837]frame binding variables (~=dynamically):        |~SWANK::*SLDB-STEPPING-P*<-->NIL   1:[10834]frame binding variables (~=dynamically):        |~SWANK::*SLDB-LEVEL*<-->83   2:[10831]frame binding variables (~=dynamically):        |~*PACKAGE*<-->#<PACKAGE COMMON-LISP-USER>   3:<1/10824>#<COMPILED-FUNCTION SWANK::DEBUG-IN-EMACS>      [10823]frame binding variables (~=dynamically):        |~SWANK::*SLIME-INTERRUPTS-ENABLED*<-->NIL *inferior-lisp*: (progn(load "c:\\Program Files\\emacs-23.3\\site-lisp\\slime-2011-11-15\\swank-loader.lisp":verbose t)(funcall (read-from-string "swank-loader:init"))(funcall (read-from-string "swank:start-server")"c:\\Users\\User1\\AppData\\Local\\Temp\\slime.10968":coding-system "iso-latin-1-unix"))   i i i i i i i       ooooo    o        ooooooo   ooooo   ooooo   I I I I I I I      8    8  8          8    8    o  8   8   I  \ `+'/ I      8        8          8    8       8   8    \  `-+-' /      8        8          8     ooooo   8oooo     `-__|__-'       8        8          8          8 8         |           8    o   8          8    o     8 8   ------+------      ooooo    8oooooo  ooo8ooo   ooooo   8 Welcome to GNU CLISP 2.49(2010-07-07)<http://clisp.cons.org/> Copyright (c)Bruno Haible,Michael Stoll 1992,1993 Copyright (c)Bruno Haible,Marcus Daniels 1994-1997 Copyright (c)Bruno Haible,Pierpaolo Bernardi,Sam Steingold 1998 Copyright (c)Bruno Haible,Sam Steingold 1999-2000 Copyright (c)Sam Steingold,Bruno Haible 2001-2010 Type :h and hit Enter for context help. [1]> ;; Loading file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\swank-loader.lisp ... ;; Loaded file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\swank-loader.lisp ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\swank-backend.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-backend.fas The following functions were used but are deprecated:  SET -This function name is anachronistic.Use SETF SYMBOL-VALUE instead. 0errors,0warnings ;; Loading file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-backend.fas ... ;; Loaded file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-backend.fas ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\xref.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\xref.fas 0errors,0warnings ;; Loading file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\xref.fas ... ;; Loaded file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\xref.fas ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\metering.lisp ... WARNING:in lines 439..533:function DELTA4-TIME is not used.          Misspelled or missing IGNORE declaration? ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\metering.fas 0errors,1warning ;; Loading file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\metering.fas ... ;; Loaded file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\metering.fas ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\swank-clisp.lisp ... WARNING:in ACCEPT-CONNECTION in lines 164..172:variable BUFFERING is used despite IGNORE declaration. ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-clisp.fas 0errors,1warning ;; Loading file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-clisp.fas ... WARNING:DEFUN/DEFMACRO:redefining function BREAK in          C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-clisp.fas,was defined in          G:\gnu\home\src\clisp\clisp-2.49\build-full\condition.fas WARNING:Replacing method #<STANDARD-METHOD (#<BUILT-IN-CLASS T>)>in #<STANDARD-GENERIC-FUNCTION EMACS-INSPECT> ;; Loaded file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-clisp.fas ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\swank-gray.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-gray.fas 0errors,0warnings ;; Loading file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-gray.fas ... WARNING:The generic function #<STANDARD-GENERIC-FUNCTION STREAM-WRITE-CHAR>is being modified,but has already been called. WARNING:The generic function #<STANDARD-GENERIC-FUNCTION STREAM-LINE-COLUMN>is being modified,but has already been          called. WARNING:The generic function #<STANDARD-GENERIC-FUNCTION STREAM-FORCE-OUTPUT>is being modified,but has already been          called. WARNING:The generic function #<STANDARD-GENERIC-FUNCTION STREAM-LINE-COLUMN>is being modified,but has already been          called. ;; Loaded file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-gray.fas ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\swank-match.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-match.fas 0errors,0warnings ;; Loading file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-match.fas ... ;; Loaded file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-match.fas ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\swank-rpc.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-rpc.fas 0errors,0warnings ;; Loading file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-rpc.fas ... ;; Loaded file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank-rpc.fas ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\swank.lisp ... WARNING:in ACCEPT-CONNECTIONS in lines 879..888:variable EF is not used.          Misspelled or missing IGNORE declaration? ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank.fas The following functions were used but are deprecated:  SET -This function name is anachronistic.Use SETF SYMBOL-VALUE instead. 0errors,1warning ;; Loading file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank.fas ... ;; Loaded file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\swank.fas WARNING:These Swank interfaces are unimplemented:          (ACTIVATE-STEPPING ADD-FD-HANDLER ADD-SIGIO-HANDLER BACKGROUND-SAVE-IMAGE DISASSEMBLE-FRAME DUP EXEC-IMAGE          FRAME-CALL          INTERRUPT-THREAD MAKE-FD-STREAM RECEIVE-IF REMOVE-FD-HANDLERS REMOVE-SIGIO-HANDLERS SEND SLDB-BREAK-AT-START          SLDB-BREAK-ON-RETURN SLDB-STEP-INTO SLDB-STEP-NEXT SLDB-STEP-OUT SOCKET-FD SPAWN TOGGLE-TRACE WAIT-FOR-INPUT) ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\contrib\swank-c-p-c.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\contrib\swank-c-p-c.fas 0errors,0warnings ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\contrib\swank-arglists.lisp ... ;; Loading file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\contrib\swank-c-p-c.fas ... ;; Loaded file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\contrib\swank-c-p-c.fas ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\contrib\swank-arglists.fas 0errors,0warnings ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\contrib\swank-fuzzy.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\contrib\swank-fuzzy.fas 0errors,0warnings ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\contrib\swank-fancy-inspector.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\contrib\swank-fancy-inspector.fas 0errors,0warnings ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\contrib\swank-presentations.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\contrib\swank-presentations.fas 0errors,0warnings ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\contrib\swank-presentation-streams.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\contrib\swank-presentation-streams.fas The following functions were used but not defined:  SWANK::SAVE-PRESENTED-OBJECT 0errors,0warnings ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\contrib\swank-package-fu.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\contrib\swank-package-fu.fas The following functions were used but not defined:  SWANK::LIST-STRUCTURE-SYMBOLS 0errors,0warnings ;; Compiling file C:\Program Files\emacs-23.3\site-lisp\slime-2011-11-15\contrib\swank-hyperdoc.lisp ... ;; Wrote file C:\Users\User1\AppData\Roaming\.slime\fasl\2011-11-11\clisp-2.49-win32-pc386\contrib\swank-hyperdoc.fas 0errors,0warnings ;; Swank started at port: 5379. CL-USER>