problem with ps-print-buffer-faces

[Jeffery Rancier]

All:

When I attempt to call ps-print-buffer-faces in jde-mode or c-mode, I get the 
follow error.  Is this a problem with my ps-print module?  Suggestions?

Platform: Windows XP
Emacs version: GNU Emacs 23.3.1 (i386-mingw-nt5.1.2600) of 2011-03-10 on 3249CTO
ps-print version : 7.3.5

Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  looking-at(nil)
  c-font-lock-enclosing-decls(4773)
  font-lock-fontify-keywords-region(2163 4773 nil)
  font-lock-default-fontify-region(2163 4773 nil)
  font-lock-fontify-region(2163 4773)
  run-hook-with-args(font-lock-fontify-region 2163 4773)
  byte-code("\302\303  #\207" [start next run-hook-with-args 
jit-lock-functions] 4)
  jit-lock-fontify-now(1 4773)
  ps-print-ensure-fontified(1 4773)
  ps-generate-postscript-with-faces(1 4773)
  ps-generate(#<buffer SQLTool.java> 1 4773 ps-generate-postscript-with-faces)
  ps-spool-with-faces(1 4773 nil)
  ps-print-with-faces(1 4773 nil)
  ps-print-buffer-with-faces(nil)
  call-interactively(ps-print-buffer-with-faces nil nil)