23.0.50; error "Can't open mouse connection"

[Leo]

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the address@hidden mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

M-x t-mouse-mode failed with:

Debugger entered--Lisp error: (error "Can't open mouse connection")
  signal(error ("Can't open mouse connection"))
  error("Can't open mouse connection")
  t-mouse-mode(toggle)
  call-interactively(t-mouse-mode)
  execute-extended-command(nil)
  call-interactively(execute-extended-command)

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/usr/local/packages/emacs/share/emacs/23.0.50/etc/DEBUG for instructions.


In GNU Emacs 23.0.50.11 (i686-pc-linux-gnu, GTK+ Version 2.10.14)
 of 2007-09-19 on Fedora
configured using `configure  '--prefix=/usr/local/packages/emacs' 
'--with-kerberos5' '--enable-locallisppath=/usr/local/share/emacs/site-lisp' 
'--without-toolkit-scroll-bars' '--with-xft' '--enable-font-backend' 
'--with-x-toolkit=yes''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_GB.UTF-8
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Major mode: Info

Minor modes in effect:
  erc-spelling-mode: t
  erc-page-mode: t
  erc-menu-mode: t
  erc-services-mode: t
  erc-autojoin-mode: t
  erc-button-mode: t
  erc-ring-mode: t
  erc-pcomplete-mode: t
  erc-track-mode: t
  erc-track-minor-mode: t
  erc-match-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-netsplit-mode: t
  erc-smiley-mode: t
  erc-readonly-mode: t
  erc-scrolltobottom-mode: t
  dired-omit-mode: t
  recentf-mode: t
  icomplete-mode: t
  show-paren-mode: t
  savehist-mode: t
  xterm-mouse-mode: t
  delete-selection-mode: t
  global-auto-revert-mode: t
  display-time-mode: t
  minibuffer-indicate-depth-mode: t
  partial-completion-mode: t
  which-function-mode: t
  shell-dirtrack-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
G - ESC [ M ` G - ESC [ M a G - ESC [ M a G - ESC [ 
M a G - ESC [ M a G - ESC [ M a G - ESC [ M a G - ESC 
[ M a G - ESC [ M a G - ESC [ M a G - ESC [ M a G - 
ESC [ M a G - ESC [ M a G - ESC [ M a G - ESC [ M a 
G - ESC [ M a G - ESC [ M a G - ESC [ M a G - ESC [ 
M a G - ESC [ M a G - ESC [ M a G - ESC [ M a G - ESC 
[ M a G - ESC [ M a G - ESC [ M a G - ESC [ M a G - 
ESC [ M SPC G - ESC [ M # G - C-h i ESC x t - m o u 
TAB RET ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B C-h 
v f e t DEL a t u TAB RET C-x 0 C-s g p m DEL DEL DEL 
m o u s e C-s C-s C-s C-s C-s C-s C-s C-s C-s C-g C-g 
q C-x b RET ESC x C-g ESC x t d o e TAB RET ESC x t 
- m o u TAB RET ESC [ A C-@ ESC [ B ESC [ B ESC [ B 
ESC [ B ESC [ B ESC [ B ESC [ B ESC w q ESC x r e p 
TAB o TAB r TAB e m TAB b TAB RET

Recent messages:
Loading t-mouse...done
When done with this frame, type C-x 5 0
t-mouse-mode: Can't open mouse connection
Type C-x 1 to remove help window.  
Quit [3 times]
Debug on Error enabled globally
Entering debugger...
Mark set
Back to top level.
Loading emacsbug...done