Description of problem:
Boot Live Fedora 23 Alpha DVD
Click on Install to Hard Drive
Click Continue on first screen (installation language)

Version-Release number of selected component:
anaconda-core-23.17-1.fc23.x86_64

The following was filed automatically by anaconda:
anaconda 23.17-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python3.4/site-packages/blivet/devices/storage.py", line 604, in currentSize
    if self._currentSize == Size(0):
  File "/usr/lib/python3.4/site-packages/blivet/devices/md.py", line 681, in _addParent
    self._size = self.currentSize
  File "/usr/lib/python3.4/site-packages/blivet/devices/lib.py", line 156, in append
    self.appendfunc(y)
  File "/usr/lib/python3.4/site-packages/blivet/devices/device.py", line 153, in _setParentList
    self._parents.append(parent)
  File "/usr/lib/python3.4/site-packages/blivet/devices/device.py", line 89, in __init__
    self.parents = parents or []
  File "/usr/lib/python3.4/site-packages/blivet/devices/storage.py", line 107, in __init__
    super(StorageDevice, self).__init__(name, parents=parents)
  File "/usr/lib/python3.4/site-packages/blivet/devices/container.py", line 63, in __init__
    super(ContainerDevice, self).__init__(*args, **kwargs)
  File "/usr/lib/python3.4/site-packages/blivet/devices/md.py", line 112, in __init__
    sysfsPath=sysfsPath)
  File "/usr/lib/python3.4/site-packages/blivet/devices/md.py", line 631, in __init__
    super(MDBiosRaidArrayDevice, self).__init__(name, **kwargs)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 568, in addUdevDiskDevice
    sysfsPath=sysfs_path, **kwargs)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 721, in addUdevDevice
    device = self.addUdevDiskDevice(info)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 421, in addUdevPartitionDevice
    self.addUdevDevice(new_info)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 724, in addUdevDevice
    device = self.addUdevPartitionDevice(info)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 260, in _addSlaveDevices
    self.addUdevDevice(slave_info)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 289, in addUdevLVDevice
    self._addSlaveDevices(info)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 710, in addUdevDevice
    device = self.addUdevLVDevice(info)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 1660, in _populate
    self.addUdevDevice(dev)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 1597, in populate
    self._populate()
  File "/usr/lib/python3.4/site-packages/blivet/devicetree.py", line 554, in populate
    self._populator.populate(cleanupOnly=cleanupOnly)
  File "/usr/lib/python3.4/site-packages/blivet/blivet.py", line 279, in reset
    self.devicetree.populate(cleanupOnly=cleanupOnly)
  File "/usr/lib/python3.4/site-packages/blivet/osinstall.py", line 1123, in storageInitialize
    storage.reset()
  File "/usr/lib64/python3.4/threading.py", line 868, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.4/site-packages/pyanaconda/threads.py", line 253, in run
    threading.Thread.run(self, *args, **kwargs)
  File "/usr/lib64/python3.4/site-packages/pyanaconda/threads.py", line 171, in raise_if_error
    raise exc_info[0](exc_info[1]).with_traceback(exc_info[2])
  File "/usr/lib64/python3.4/site-packages/pyanaconda/threads.py", line 116, in wait
    self.raise_if_error(name)
  File "/usr/lib64/python3.4/site-packages/pyanaconda/timezone.py", line 76, in time_initialize
    threadMgr.wait(THREAD_STORAGE)
  File "/usr/lib64/python3.4/threading.py", line 868, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.4/site-packages/pyanaconda/threads.py", line 253, in run
    threading.Thread.run(self, *args, **kwargs)
AttributeError: 'MDBiosRaidArrayDevice' object has no attribute '_currentSize'

Additional info:
cmdline:        /usr/bin/python3  /sbin/anaconda --liveinst --method=livecd:///dev/mapper/live-base
cmdline_file:   BOOT_IMAGE=vmlinuz0 initrd=initrd0.img root=live:CDLABEL=Fedora-Live-WS-x86_64-23_A-2 rootfstype=auto ro rd.live.image quiet  rhgb rd.luks=0 rd.md=0 rd.dm=0 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.2.0-0.rc5.git0.2.fc23.x86_64
other involved packages: python3-libs-3.4.3-5.fc23.x86_64, python3-blivet-1.10-1.fc23.noarch
product:        Fedora
release:        Fedora release 23 (Twenty Three)
type:           anaconda
version:        23