Why doesn XEmacs Speedbar module work with Exuberant Ctags?
The default command line switches used by XEmacs for etags are not compatible with Exuberant Ctags options. By default, Exuberant Ctags installs a symbolic link, “etags”, pointing to the ctags executable. When Exuberant Ctags is started with the name “etags”, it produces Emacs-style tag files by default. To fix this, add the following lines to your .emacs file, replacing the path to etags with the path where the symbolic link was installed.