Description of problem:
$bugzilla query --product Fedora --version 18 --reporter kparal@redhat.com --boolean_query 'creation_ts-changedafter-2012-11-29T00:00:00 & creation_ts-changedbefore-2013-01-15T23:59:59' --outputformat='%{id} %{reporter} %{status} %{resolution} %{whiteboard}'

Version-Release number of selected component:
python-bugzilla-0.7.0-3.fc18

Additional info:
cmdline:        /usr/bin/python /usr/bin/bugzilla query --product Fedora --version 18 --reporter kparal@redhat.com --boolean_query creation_ts-changedafter-2012-11-29T00:00:00 '--outputformat=%{id} %{reporter} %{status} %{resolution} %{whiteboard}'
executable:     /usr/bin/bugzilla
kernel:         3.7.4-204.fc18.x86_64
uid:            1000

Truncated backtrace:
base.py:1260:__getattr__:AttributeError: Bug object has no attribute 'None_whiteboard'

Traceback (most recent call last):
  File "/usr/bin/bugzilla", line 813, in <module>
    main()
  File "/usr/bin/bugzilla", line 736, in main
    print format_field_re.sub(bug_field,opt.outputformat)
  File "/usr/bin/bugzilla", line 726, in bug_field
    val = special_fields[fieldname](b, rest)
  File "/usr/bin/bugzilla", line 720, in <lambda>
    'whiteboard': lambda b,wb: b.getwhiteboard(wb),
  File "/usr/lib/python2.7/site-packages/bugzilla/base.py", line 1381, in getwhiteboard
    return getattr(self,"%s_whiteboard" % which)
  File "/usr/lib/python2.7/site-packages/bugzilla/base.py", line 1260, in __getattr__
    raise AttributeError("Bug object has no attribute '%s'" % name)
AttributeError: Bug object has no attribute 'None_whiteboard'

Local variables in innermost frame:
newname: 'creator'
self: <Bug #881670 on https://bugzilla.redhat.com/xmlrpc.cgi at 0x7f03e31881d0>
oldname: 'reporter'
name: 'None_whiteboard'
refreshed: True