[Bug 1059120] Re: Cant upgrade from precise to quantal

[mrDoctorWho]

** Attachment added: "apport crash"
   https://bugs.launchpad.net/bugs/1059120/+attachment/3358707/+files/_usr_bin_do-release-upgrade.0.crash

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Title:
  Cant upgrade from precise to quantal

Status in “apt” package in Ubuntu:
  New

Bug description:
  Hello. I tried to upgrade from Precise (12.04.1) to Quantal (at now 12.10 Beta-2). I wrote in console: "update-manager -d" and press "update" in update-manager.
  Then see an errors in terminal (python traceback):
  Error in sys.excepthook:
  Traceback (most recent call last):
    File "/tmp/update-manager-pIYJOg/DistUpgrade/DistUpgradeViewGtk3.py", line 475, in _handleException
      apport_crash(type, value, tb)
    File "/tmp/update-manager-pIYJOg/DistUpgrade/DistUpgradeApport.py", line 54, in apport_crash
      _apport_append_logfiles(report)
    File "/tmp/update-manager-pIYJOg/DistUpgrade/DistUpgradeApport.py", line 32, in _apport_append_logfiles
      report[ident] = (open(f), )
    File "/usr/lib/python2.7/dist-packages/problem_report.py", line 509, in __setitem__
      assert k.replace('.', '').replace('-', '').replace('_', '').isalnum()
  AssertionError

  Original exception was:
  Traceback (most recent call last):
    File "/tmp/update-manager-pIYJOg/DistUpgrade/DistUpgradeViewGtk3.py", line 151, in pulse
      apt_pkg.size_to_str(self.current_cps)))
  UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 1: ordinal not in range(128)

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