Description of problem:
In partitioning menu where trying to specify freespace on a USB stick which has some unallocated space
The following was filed automatically by anaconda:
anaconda 18.37.11 exception report
Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/pyanaconda/storage/__init__.py", line 1121, in newLV
    raise ValueError("name already in use")
  File "/usr/lib/python2.7/site-packages/pyanaconda/storage/__init__.py", line 3339, in new_device
    return getattr(self.storage, self.new_device_attr)(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/pyanaconda/storage/__init__.py", line 2298, in newDevice
    **kwa)
  File "/usr/lib/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 885, in _replace_device
    self.__storage.newDevice(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1106, in _save_right_side
    selector=selector)
  File "/usr/lib/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2148, in on_selector_clicked
    self._save_right_side(self._current_selector)
  File "/usr/lib/python2.7/site-packages/pyanaconda/ui/gui/spokes/lib/accordion.py", line 195, in _onSelectorClicked
    cb(selector)
ValueError: name already in use

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-i686-Live-Desktop.iso 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.i686
other involved packages: 
package:        anaconda-18.37.11-1.fc18.i686
packaging.log:  
product:        Fedora
release:        Fedora release 18 (Spherical Cow)
type:           libreport
version:        18