I use CLisp 2.38; I had problems with newer versions of CLISP. My Xemacs-option-file: (add-to-list 'load-path "C:/LISP/slime-2.0/") (add-to-list 'load-path "C:/LISP/cm/") (load "etc/xemacs/cm.el") (enable-cm-commands) In the cm.el file in cm/etc/xemacs I changed cm.sh to cm.bat. Now it works fine. I hope this helps.