Error of C-c C-l in ESS

[Lu Chi-Hsien Joseph]

Dear ESS users,
                                                                                
I got the following error when trying to load a source file
(smart.R in directory E:\R\)
into XEmacs through the menu iESS and "Load source file",
namely C-c C-l,
                                                                                
	Error in file(file, "r") : unable to open connection
	In addition: Warning message:
	cannot open file `E:Rsmart.R'
                                                                                
It seems the slash "/" or "\" being missing, but I don't know how to fix that.
I just can't find this kind of problem being asked in the mail-list.
                                                                                
My environment is
  Win98, XEmacs 21.4.6 and ESS 5.1.24
                                                                                
Hope I am not the first, or the only, one having this kind of problem.
Your help will be highly appreciated.

By the way, after an hour spent, I installed GNU Emacs
(with the same version of ESS) and found C-c C-l works.
However, the completion (TAB) just seems taking forever to finish
every time (not just the first time) after following the instruction
to make ess-r-namedb.el and put into the correct directory (even
re-compiled it into ess-r-namedb.elc).
                                                                            
Best regards,
                                                                                
C. Joseph Lu
Department of Statistics
National Cheng-Kung University
Tainan, Taiwan

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