building feedmail customisation group fails

[Frederik Fouvry]

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In GNU Emacs 21.1.1 (i686-pc-linux-gnu, X toolkit)
 of 2001-11-07 on cc.at.coli.uni-sb.de
configured using `configure  --with-pop --prefix=/usr'
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: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t

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

M-x customize-group RET
feedmail

gives an error.  This is how far it gets in building the group:

/- Feedmail group: ------------------------------------------------------\
      State: unknown, you should not see this.
   Assist other email packages to massage outgoing messages.
   See also >


(Emacs was started with options -q --no-site-file.  M-x
customize-group was the first command given.)

Recent input:
<help-echo> <escape> x c u s t <tab> - g r <tab> <return> 
f e e d m a i l <return> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <menu-bar> 
<help-menu> <report-emacs-bug>

Recent messages:
Loading cus-edit...
Loading easymenu...done
Loading cus-edit...done
Loading feedmail...done
Creating customization buffer...
Loading wid-browse...done
Creating customization buttons...
Creating customization items...
widget-apply: Symbol's function definition is void: nil
Loading emacsbug...done