Scan error: Containing expression ends prematurely

[Rajaraman]

In GNU Emacs 21.2.1 (i386-msvc-nt5.0.2195)
of 2002-03-20 on buffy
configured using `configure --with-msvc (12.00)'
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: ENU
 locale-coding-system: iso-latin-1
 default-enable-multibyte-characters: t

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

I was editing the changes for ant module of JDE. When i tried saving 
changes for future sessions, i get the error - forward-sexp: Scan error: 
"Containing expression ends prematurely", 1883, 1884

kindly help me out in this regard.

Recent input:
C-k <up> <C-right> <C-right> <C-right> <C-right> <C-right>
<C-right> <C-right> <C-right> <C-right> <C-left> <end>
<lwindow> C-` <down> <return> <menu-bar> <help-menu>
<emacs-problems> C-s f u t u r e SPC s e <C-home> C-s
s e s s i o C-s C-s C-s C-s C-s C-s C-s <down> <C-home>
<f12> M-x e m a <tab> b u <tab> <tab> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> b u <tab> g - <tab> <tab> <backspace> <tab>
<backspace> <tab> <backspace> <tab> <backspace> <tab>
<tab> <tab> <lwindow> r e <tab> p o <tab> <tab> <tab>
<tab> <tab> <tab> <tab> r t - <tab> <return>

Recent messages:
File mode specification error: (wrong-type-argument listp auto-mode-alist)
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