Description of problem:
Tenho o Linux Mint intalado em todo HD, por isso tentei criar as particões manualmente. Ocorreu este erro ao clicar no "+ Unknow Linux". 
The following was filed automatically by anaconda:
anaconda 18.37.11 exception report
Traceback (most recent call first):
  File "/usr/lib64/python2.7/site-packages/gi/types.py", line 47, in function
    return info.invoke(*args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1713, in _populate_right_side
    typeCombo.set_active(type_index_map[device_type])
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2199, in on_selector_clicked
    self._populate_right_side(selector)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1936, in _show_first_mountpoint
    self.on_selector_clicked(page._members[0])
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2222, in on_page_clicked
    self._show_first_mountpoint(page=page)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/lib/accordion.py", line 119, in _onExpanded
    cb(obj.get_child())
TypeError: Argument 1 does not allow None as a value

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda --liveinst --method=livecd:///dev/mapper/live-osimg-min --lang en_US.UTF-8
cmdline_file:   initrd=initrd0.img root=live:CDLABEL=Fedora-18-x86_64-Live-Desktop.is rootfstype=auto ro rd.live.image quiet  rhgb rd.luks=0 rd.md=0 rd.dm=0  BOOT_IMAGE=vmlinuz0 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.6.10-4.fc18.x86_64
other involved packages: pygobject3-base-3.4.2-6.fc18.x86_64
package:        anaconda-18.37.11-1.fc18.x86_64
packaging.log:  
product:        Fedora
release:        Fedora release 18 (Spherical Cow)
type:           libreport
version:        18