From Raw Hide from last night or the night before, I'll attach the
anacdump.txt

Traceback (most recent call last):
  File "/usr/bin/anaconda", line 1173, in ?
    intf.run(id, dispatch, configFileData)
  File "/usr/src/build/491522-i386/install//usr/lib/anaconda/text.py",
line 510, in run
    dispatch.gotoNext()
  File
"/usr/src/build/491522-i386/install//usr/lib/anaconda/dispatch.py", line
173, in gotoNext
    self.moveStep()
  File
"/usr/src/build/491522-i386/install//usr/lib/anaconda/dispatch.py", line
241, in moveStep
    rc = apply(func, self.bindArgs(args))
  File
"/usr/src/build/491522-i386/install//usr/lib/anaconda/packages.py", line
778, in doPreInstall
    isys.mount("/dev", "/mnt/sysimage/dev", bindMount = 1)
  File "/usr/lib/anaconda/isys.py", line 189, in mount
    rc = _isys.mount(fstype, device, location, readOnly, bindMount,
remount)
SystemError: (22, 'Invalid argument')

Local variables in innermost frame:
bindMount: 1
remount: 0
fstype: ext2
readOnly: 0
location: /mnt/sysimage/dev
device: /dev
createdNode: 0