Description of problem:
Installing KDE spin, I chose manual partitioning (which was accepted), and then started the installation.
I configured the root password and created a user. When creating a user, I chose to parameterize the advanced options, I close this dialog and opened it again

Version-Release number of selected component:
anaconda-core-23.19.10-1.fc23.x86_64

The following was filed automatically by anaconda:
anaconda 23.19.10-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python3.4/site-packages/pyanaconda/ui/gui/spokes/user.py", line 148, in refresh
    group = self._groupDict[group_name]
  File "/usr/lib64/python3.4/site-packages/pyanaconda/ui/gui/spokes/user.py", line 651, in on_advanced_clicked
    self._advanced.refresh()
KeyError: 'wheel'

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-KDE-x86_64-23-10 rootfstype=auto ro rd.live.image quiet  rhgb rd.luks=0 rd.md=0 rd.dm=0 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.2.3-300.fc23.x86_64
other involved packages: anaconda-gui-23.19.10-1.fc23.x86_64
product:        Fedora
release:        Fedora release 23 (Twenty Three)
type:           anaconda
version:        23

Potential duplicate: bug 1122042