Why do I get error "SSSDConfig.ParsingError" while I execute authconfig-tui on Red Hat Enterprise Linux 6.2?

Issue

• When invoking authconfig-tui I get follow Traceback messages:

root@ ~]# authconfig-tui
Traceback (most recent call last):
  File "/usr/share/authconfig/authconfig-tui.py", line 894, in <module>
    sys.exit(module.run())
  File "/usr/share/authconfig/authconfig-tui.py", line 475, in run
    self.readAuthInfo()
  File "/usr/share/authconfig/authconfig-tui.py", line 327, in readAuthInfo
    self.info = authinfo.read(self.printError)
  File "/usr/share/authconfig/authinfo.py", line 916, in read
    info.read()
  File "/usr/share/authconfig/authinfo.py", line 2181, in read
    self.readSSSD(ref)
  File "/usr/share/authconfig/authinfo.py", line 1609, in readSSSD
    self.sssdConfig.import_config(all_configs[CFG_SSSD].origPath)
  File "/usr/lib/python2.6/site-packages/SSSDConfig.py", line 1213, in import_config
    raise ParsingError
SSSDConfig.ParsingError