Version-Release number of selected component:
system-config-samba-1.2.98-1.fc18

Additional info:
cmdline:        /usr/bin/python /usr/bin/system-config-samba
executable:     /usr/bin/system-config-samba
kernel:         3.6.11-3.fc18.i686.PAE
uid:            0

Truncated backtrace:
sambaBackend.py:184:writeSmbUsersFile:AttributeError: 'SambaBackend' object has no attribute 'samba_users_file'

Traceback (most recent call last):
  File "/usr/share/system-config-samba/sambaUserWin.py", line 121, in onUsersOkButtonClicked
    self.samba_backend.writeSmbUsersFile()
  File "/usr/lib/python2.7/site-packages/scsamba/core/sambaBackend.py", line 184, in writeSmbUsersFile
    for line in self.samba_users_file:
AttributeError: 'SambaBackend' object has no attribute 'samba_users_file'

Local variables in innermost frame:
e: OSError(2, 'Aucun fichier ou dossier de ce type')
self: <scsamba.core.sambaBackend.SambaBackend object at 0x915528c>
oldmode: 420
fd: <open file '/etc/samba/smbusers.new', mode 'w' at 0x91cc498>
path: '/etc/samba/smbusers'
pathnew: '/etc/samba/smbusers.new'