Description of problem:
created bootable USB from Fedora Server 22 x86_64 iso; iso checksum was verified. Large number of errors while booting, then installer opens with fatal error message. 

Version-Release number of selected component:
anaconda-22.20.13-1

The following was filed automatically by anaconda:
anaconda 22.20.13-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python2.7/site-packages/gi/overrides/BlockDev.py", line 384, in wrapped
    raise transform[1](msg)
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 1674, in handleUdevDMRaidMemberFormat
    rs_names = blockdev.dm.get_member_raid_sets(uuid, name, major, minor)
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 1895, in handleUdevDeviceFormat
    self.handleUdevDMRaidMemberFormat(info, device)
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 1261, in addUdevDevice
    self.handleUdevDeviceFormat(info, device)
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 2193, in _populate
    self.addUdevDevice(dev)
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 2127, in populate
    self._populate()
  File "/usr/lib/python2.7/site-packages/blivet/blivet.py", line 277, in reset
    self.devicetree.populate(cleanupOnly=cleanupOnly)
  File "/usr/lib/python2.7/site-packages/blivet/osinstall.py", line 1116, in storageInitialize
    storage.reset()
  File "/usr/lib64/python2.7/threading.py", line 766, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 244, in run
    threading.Thread.run(self, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 115, in wait
    self.raise_if_error(name)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/timezone.py", line 75, in time_initialize
    threadMgr.wait(THREAD_STORAGE)
  File "/usr/lib64/python2.7/threading.py", line 766, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 244, in run
    threading.Thread.run(self, *args, **kwargs)
DMError: Failed to group_set

Additional info:
addons:         com_redhat_kdump
cmdline:        /usr/bin/python2  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=/images/pxeboot/vmlinuz inst.stage2=hd:LABEL=Fedora-22-x86_64 rd.live.check quiet
dnf.rpm.log:    Sep 03 18:41:22 INFO --- logging initialized ---
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.0.4-301.fc22.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        22