Description of problem:


On start of liveinst or anaconda get the following:
Starting installer, one moment...
anaconda 20.25.15-1 for anaconda bluesky (pre-release) started.
Backtrace has 20 calls on stack:
  20: /lib64/libparted.so.2(ped_assert+0x44) [0x7f3c1dda7054]
  19: /lib64/libparted.so.2(+0x27826) [0x7f3c1ddc1826]
  18: /lib64/libparted.so.2(ped_disk_duplicate+0x41) [0x7f3c1ddabc51]
  17: /usr/lib64/python2.7/site-packages/_pedmodule.so(py_ped_disk_duplicate+0x16) [0x7f3c1dff37f6]
  16: /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x4594) [0x7f3c2ff75c84]
  15: /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed) [0x7f3c2ff7729d]
  14: /lib64/libpython2.7.so.1.0(+0x6f26d) [0x7f3c2ff0426d]
  13: /lib64/libpython2.7.so.1.0(PyObject_Call+0x43) [0x7f3c2fedf0f3]
  12: /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0xde7) [0x7f3c2ff724d7]
  11: /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed) [0x7f3c2ff7729d]
  10: /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x425f) [0x7f3c2ff7594f]
  9: /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x4350) [0x7f3c2ff75a40]
  8: /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed) [0x7f3c2ff7729d]
  7: /lib64/libpython2.7.so.1.0(+0x6f26d) [0x7f3c2ff0426d]
  6: /lib64/libpython2.7.so.1.0(PyObject_Call+0x43) [0x7f3c2fedf0f3]
  5: /lib64/libpython2.7.so.1.0(+0x59105) [0x7f3c2feee105]
  4: /lib64/libpython2.7.so.1.0(PyObject_Call+0x43) [0x7f3c2fedf0f3]
  3: /lib64/libpython2.7.so.1.0(+0xa1227) [0x7f3c2ff36227]
  2: /lib64/libpython2.7.so.1.0(+0x9ff3f) [0x7f3c2ff34f3f]
  1: /lib64/libpython2.7.so.1.0(PyObject_Call+0x43) [0x7f3c2fedf0f3]
Aborted


Version-Release number of selected component (if applicable):
Fedora 20 KDE iso installation image.

How reproducible:
Start installation.


Actual results:
Installation aborted without any GUI message.

Expected results:
Begin installation process or get error message.

Additional info:
System configuration:
(HP Envy 15-j002er) Intel Core i7, 12Gb RAM, 1Tb harddirve, nVidia 740