[R] No ESS process is associated with this buffer now

[Stoyanov, Tsvetan]

I use R with ESS in Emacs 21.2.1 on Windows NT. When I edit  a function with
C-c C-d and then
try to load it back with C-c C-l, I get the following error. I know I can
use C-c C-b but anyway, it is a bug. 
Any ideas?

Thanks,
Tsvetan

Debugger entered--Lisp error: (error "No ESS process is associated with this
buffer now.")
  signal(error ("No ESS process is associated with this buffer now."))
  error("No ESS process is associated with this buffer now.")
  get-ess-process(nil)
  ess-get-process-variable(nil inferior-ess-ddeclient)
  ess-ddeclient-p()
  ess-command("search()\n" #<buffer  *search-list*>)
  ess-search-list()
  ess-object-modtime(#("myfun" 0 5 (face font-lock-function-name-face
fontified t)))
  ess-check-modifications()
  ess-load-file-original("h:/tmp/StoyanovT.myfun.R")
  ess-load-file("h:/tmp/StoyanovT.myfun.R")
* call-interactively(ess-load-file)
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