emacs v21.3, fresh checkout of SLIME. .emacs section: (require 'slime) (slime-setup '(slime-asdf slime-fancy)) Backtrace: Debugger entered--Lisp error: (file-error "Cannot open load file" "tree-widget") require(tree-widget) eval-buffer(#<buffer *load*<3>> nil "slime-xref-browser" nil t) load-with-code-conversion("/home/user/lisp/slime/contrib/slime-xref-browser.el" "slime-xref-browser" nil t) require(slime-xref-browser) eval-buffer(#<buffer *load*<2>> nil "slime-fancy" nil t) load-with-code-conversion("/home/user/lisp/slime/contrib/slime-fancy.el" "slime-fancy" nil t) require(slime-fancy) mapc(require (slime-asdf slime-fancy)) slime-setup((slime-asdf slime-fancy)) eval-buffer(#<buffer *load*> nil "~/.emacs" nil t) load-with-code-conversion("/home/user/.emacs" "~/.emacs" t t) load("~/.emacs" t t) #[nil "^H<85><97>^@ Æ=<83>^Q^@Ç^HÈQ<82>5^@ É=<83>'^@ÊÇËÌ#<83>#^@Í<82>5^@Î<82>5^@ Ï=<83>1^@Ð<82>5^@Ç^HÑQ^ZÒ^SÓ\nÒ<89>#<88>^KÒ=<83>F^@Ë^S^K<83><88>^@Ô^K!Õ<9a><83><88>^@Ö^K!<89>^\×P^]Ø^M!<83>d^@^M<82>o^@Ø\f!<83>n^@\f<82>o^@Ë<89>^T<83><87>^@Ù\f^K\"<83><85>^@ÚÛ\f^K#<88>ÜÝ!<88>\f^S*^N^_<86><96>^@Ë^^ ÓÞÒ<89>#))<87>" [init-file-user system-type user-init-file-1 user-init-file source alt ms-dos "~" "/_emacs" windows-nt directory-files nil "^\\.emacs\\(\\.elc?\\)?$" "~/.emacs" "~/_emacs" vax-vms "sys$login:.emacs" "/.emacs" t load file-name-extension "elc" file-name-sans-extension ".el" file-exists-p file-newer-than-file-p message "Warning: %s is newer than %s" sit-for 1 "default" inhibit-default-init inhibit-startup-message] 5]() command-line() normal-top-level()