Description of problem:
Downloaded today's boot.iso and attempted install from both GUI and cmdline based. GUI results in a non-responsive anaconda screen and cmdline install resulted in this backtrace.

Version-Release number of selected component:
anaconda-21.48-1

The following was filed automatically by anaconda:
anaconda 21.48-1 exception report
Traceback (most recent call first):
  File "/usr/share/anaconda/addons/com_redhat_kdump/common.py", line 65, in getMemoryBounds
    if flags.targetarch == 'ppc64':
  File "/usr/share/anaconda/addons/com_redhat_kdump/tui/spokes/kdump.py", line 50, in <module>
    lower, upper ,step = getMemoryBounds()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/common.py", line 600, in collect
    __import__(module_pattern % mod_name)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/__init__.py", line 159, in _collectActionClasses
    standalones.extend(collect(module_pattern, path, lambda obj: issubclass(obj, standalone_class) and \
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/tui/__init__.py", line 153, in setup
    spokes = self._collectActionClasses(self.paths["spokes"], StandaloneSpoke)
  File "/sbin/anaconda", line 1346, in <module>
    anaconda._intf.setup(ksdata)
AttributeError: 'Flags' object has no attribute 'targetarch'

Additional info:
addons:         com_redhat_kdump
cmdline:        /usr/bin/python  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=Fedora-rawhide-x86_64 cmdline
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.16.0-0.rc5.git1.1.fc22.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        rawhide