Created attachment 399790 [details]
anaconda traceback

If I boot the install process with the nomodeset option (the install hangs without it) then I end up in the text base install. However this crashes out after the select the install to upgrade stage with the error
Traceback (most recent call first):
  File "/usr/lib/anaconda/text.py", line 597, in run
    (file, classNames) = stepToClasses[step]
  File "/usr/bin/anaconda", line 1191, in <module>
    anaconda.intf.run(anaconda)
KeyError: 'cleardiskssel'
The trace back is attached.