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Description of problem:
After Updating roswell printing related rpms to latest rawhide. 
(newt-0.50.30-1 printconf-0.3.10 alchemist 1.0.14)
printconf-gui/tui and lpr break with following errors.

$ /etc/init.d/lpd start
Starting lpd: Traceback (innermost last):
  File "/usr/sbin/printconf-backend", line 7, in ?
    import printconf_backend
  File "/usr/share/printconf/util/printconf_backend.py", line 127, in ?
    if not checkNspMark(namespace = "printconf", mark = "_PRINTCONF_BACKEND_"):
KeyError: No handler found for box_type: "fileblackbox"
No Printers Defined                                        [  OK  ]


$ printconf-tui
Initializing alchemist edit environment ...
Traceback (innermost last):
  File "/usr/sbin/printconf-tui", line 7, in ?
    import printconf_tui
  File "/usr/share/printconf/util/printconf_tui.py", line 2026, in ?
    if main.cmd_handlers.has_key(cmd):
  File "/usr/share/printconf/util/printconf_tui.py", line 1907, in tui_main_run
    init_queue_edit("local")
  File "/usr/share/printconf/util/printconf_conf.py", line 416, in
init_queue_edit
    dict = editor.editReadBox(editbox)
  File "/usr/lib/python1.5/site-packages/pyalchemist_python.py", line 70,
in editReadBox
    depth = editpos)
KeyError: No handler found for box_type: "fileblackbox"


replacing alchemist with previous rawhide release (1.0.13) allows me to
start lpd daemon and configure my postscript printer and create output.


How reproducible:
Always

Steps to Reproduce:
1./etc/init.d/lpd start
2.printconf-gui
3.printconf-tui
	

Actual Results:  stacktrace in description, lpd isn't started / config tool
isn't started

Additional info:

* Mon Aug 06 2001 Crutcher Dunnavant <crutcher@redhat.com> 1.0.14-1

- fixed pyalchemist's writeCtx argument parsing.
- tweaked triggerblackbox so that it works.
- internalized fileblackbox, so we dont have to dl open it.