Comment 10 for bug 1130857

I did a "mv .mozilla .mozilla_backup", started ff and confirmed the blu images. When trying a bisect I get:

$ mozregression --good=2012-08-01
Downloading nightly from 2012-11-12
Installing nightly
Starting nightly
['moznightlyapp/firefox/firefox', '-profile', '/tmp/tmpteutxk.mozrunner']
Traceback (most recent call last):
  File "/usr/local/bin/mozregression", line 9, in <module>
    load_entry_point('mozregression==0.6.4', 'console_scripts', 'mozregression')()
  File "/usr/local/lib/python2.7/dist-packages/mozregression/regression.py", line 187, in cli
    bisector.bisect(get_date(options.good_date), get_date(options.bad_date))
  File "/usr/local/lib/python2.7/dist-packages/mozregression/regression.py", line 108, in bisect
    dest = self.runner.start(midDate)
  File "/usr/local/lib/python2.7/dist-packages/mozregression/runnightly.py", line 237, in start
    if not self.app.start(self.profile, self.addons, self.cmdargs):
  File "/usr/local/lib/python2.7/dist-packages/mozregression/runnightly.py", line 141, in start
    self.runner.start()
  File "/usr/local/lib/python2.7/dist-packages/mozrunner/runner.py", line 183, in start
    self.process_handler.run(timeout, outputTimeout)
  File "/usr/local/lib/python2.7/dist-packages/mozprocess/processhandler.py", line 621, in run
    self.proc = self.Process(self.cmd, **args)
  File "/usr/local/lib/python2.7/dist-packages/mozprocess/processhandler.py", line 76, in __init__
    universal_newlines, startupinfo, creationflags)
  File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1249, in _execute_child
    raise child_exception
OSError: [Errno 8] Exec format error
Exception AttributeError: "'ProcessHandler' object has no attribute 'proc'" in <bound method Runner.cleanup of <mozrunner.runner.Runner object at 0x10f71530>> ignored