ESS hangs in Xemacs

[Scott, Steven]

I recently downloaded Xemacs and R (version 1.6.2) onto my new XP machine. 
 
When I try to start an R/iESS session Xemacs hangs.  I set Options->Troubleshooting->Debug on (Error/Signal/Quit), to get the backtrace shown below.
 
I'm not too comfortable with lisp, but I'm guessing that I need to make err-r-namedb.el and put it somewhere.  However, I can't find any *.el or *.elc files in the Xemacs distribution, so I'm not sure where to put it.
 
Any help would be much appreciated.
 
Gracias, 
 
Steve Scott (sls at usc.edu)
 
 
------------- Backtrace--------------------
Signaling: (file-error "Cannot open load file %s" "ess-r-namedb.el")
  signal(file-error ("Cannot open load file %s" "ess-r-namedb.el"))
  load("ess-r-namedb.el")
  ess-load-object-name-db-file()
  inferior-ess-mode()
  ess-multi("R" #<buffer "*R*"> "--ess ")
  inferior-ess("--ess ")
  R(nil)
  call-interactively(R)
  command-execute(R t)
  execute-extended-command(nil)
  call-interactively(execute-extended-command)