Description of problem:
1) virtual machine with 2 identical virtual disk drives (12GB). sda having other distro installed
2) setup installation to sdb using manual partitioning. In manual partitioning wipe sdb (if needed) and then select 'Create partitions automatically'
3) reenter 'INSTALLATION DESTINATION' and deselect both disks
4) reenter 'INSTALLATION DESTINATION', go to the manual partitioning tool and try to reuse the partitions designed in step 2 (not delete them and create again, but reuse what was created before)

Version-Release number of selected component:
anaconda-19.31.34-1

The following was filed automatically by anaconda:
anaconda 19.31.34-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1022, in _update_selectors
    page = self._accordion._find_by_title(self.translated_new_install_name).get_child()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1361, in _save_right_side
    self._update_selectors()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2383, in _save_current_selector
    self._save_right_side(self._current_selector)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2396, in on_selector_clicked
    self._save_current_selector()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/lib/accordion.py", line 217, in _onSelectorClicked
    cb(selector)
AttributeError: 'NoneType' object has no attribute 'get_child'

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda
cmdline_file:   initrd=/distrotrees/65107/initrd method=http://download-01.eng.brq.redhat.com/pub/rhel/rel-eng/RHEL-7.0-20131115.2/compose/Everything/x86_64/os/ repo=http://download-01.eng.brq.redhat.com/pub/rhel/rel-eng/RHEL-7.0-20131115.2/compose/Everything/x86_64/os/  BOOT_IMAGE=/distrotrees/65107/kernel 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.10.0-50.el7.x86_64
product:        Red Hat Enterprise Linux
release:        Red Hat Enterprise Linux Server release 7.0 Beta (Maipo)
type:           anaconda
version:        7.0