unable to launch system-config-printer

[LarryT]

When trying to launch System/admin/Printing, the window open and close 
immediatly !
Here is what i get when launching from terminal :

[johndoe at ws044 ~]$ system-config-printer
Traceback (most recent call last):
  File "/usr/share/system-config-printer/system-config-printer.py", line 
2285, in ?
    main()
  File "/usr/share/system-config-printer/system-config-printer.py", line 
2276, in main
    mainwindow = GUI()
  File "/usr/share/system-config-printer/system-config-printer.py", line 
270, in __init__
    self.populateList()
  File "/usr/share/system-config-printer/system-config-printer.py", line 
343, in populateList
    self.printers = cupshelpers.getPrinters(self.cups)
  File "/usr/share/system-config-printer/cupshelpers.py", line 213, in 
getPrinters
    printers_conf = PrintersConf(connection)
  File "/usr/share/system-config-printer/cupshelpers.py", line 290, in 
__init__
    self.parse(self.fetch('/admin/conf/classes.conf'), 'Class')
  File "/usr/share/system-config-printer/cupshelpers.py", line 301, in fetch
    raise e
cups.HTTPError: 404
[johndoe at ws044 ~]$

-- 
Larry
"Computers are like air conditioners - They stop working properly when you open Windows !" :-P