Acho que você pode resolver o problema temporariamente comentando (removendo) as seguintes linhas em /usr/share/emacs(24)/site-lisp/gforth/gforth.el
:
(eval-when-compile
(byte-compile 'forth-set-word-properties)
(byte-compile 'forth-next-known-forth-word)
(byte-compile 'forth-update-properties)
(byte-compile 'forth-delete-properties)
(byte-compile 'forth-get-regexp-branch))
Eu resolvi esse problema usando esse método.