Description of problem:
Try running anaconda with --image option.

If running from a git checkout then (as root):

# export top_srcdir=`pwd`
# . ./tests/testenv.sh
# ./anaconda -G --image /path/to/disk.img

where disk.img has been created with dd:
dd if=/dev/zero of=disk.img bs=1M count=1 seek=10240

The same -G --image disk.img options work perfectly with anaconda 21.48.22.55-1 (RHEL 7).

Version-Release number of selected component:
anaconda-24.5-0.1.20151029122830

The following was filed automatically by anaconda:
anaconda 24.5-0.1.20151029122830 exception report
Traceback (most recent call first):
  File "/home/atodorov/anaconda/pyanaconda/packaging/dnfpayload.py", line 557, in spaceRequired
    for (key, val) in self.storage.mountpoints.items():
  File "/home/atodorov/anaconda/pyanaconda/ui/lib/space.py", line 76, in check
    needed = self.payload.spaceRequired
  File "/home/atodorov/anaconda/pyanaconda/ui/gui/hubs/__init__.py", line 238, in _updateContinue
    if self._checker and not self._checker.check():
  File "/home/atodorov/anaconda/pyanaconda/ui/gui/hubs/__init__.py", line 212, in _createBox
    self._updateContinue()
  File "/home/atodorov/anaconda/pyanaconda/ui/gui/hubs/__init__.py", line 344, in refresh
    self._createBox()
  File "/home/atodorov/anaconda/pyanaconda/ui/gui/__init__.py", line 825, in run
    self._currentAction.refresh()
  File "./anaconda", line 1198, in <module>
    anaconda._intf.run()
AttributeError: 'NoneType' object has no attribute 'mountpoints'

Additional info:
addons:         org_fedora_realm
cmdline:        /usr/bin/python3  ./anaconda -G --image /var/lib/libvirt/images/disk1.img
cmdline_file:   BOOT_IMAGE=/vmlinuz-4.3.0-0.rc5.git2.1.fc24.x86_64 root=/dev/mapper/fedora_tyan--gt24--05-root ro rd.lvm.lv=fedora_tyan-gt24-05/root rd.lvm.lv=fedora_tyan-gt24-05/swap console=ttyS0,115200 LANG=en_US.UTF-8
executable:     ./anaconda
hashmarkername: anaconda
kernel:         4.3.0-0.rc5.git2.1.fc24.x86_64
product:        Fedora
release:        Fedora release 24 (Rawhide)
type:           anaconda
version:        rawhide