[Bug 1055386] [NEW] When applying upgrade from 12.04 to 12.10 I got a ERROR and update-manager crashed

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I was doing a partial upgrade from 12.04 to 12.10
during the application of new packages the update-manager crashed.
Last lines in terminal were:

AssertionError
Original exception was:
Traceback (most recent call last):
  File "/usr/bin/update-manager", line 113, in <module>
    controller.doPartialUpgrade()
  File "/usr/lib/python2.7/dist-packages/DistUpgrade/DistUpgradeController.py", line 1748, in doPartialUpgrade
    if not self.doPostUpgrade():
  File "/usr/lib/python2.7/dist-packages/DistUpgrade/DistUpgradeController.py", line 1152, in doPostUpgrade
    now_obsolete = self.cache._getObsoletesPkgs()
  File "/usr/lib/python2.7/dist-packages/DistUpgrade/DistUpgradeCache.py", line 985, in _getObsoletesPkgs
    for pkg in self:
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 197, in __iter__
    yield self[pkgname]
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 182, in __getitem__
    pkg = self._weakref[key] = Package(self, self._cache[key])
KeyError: '0ad-dbg:i386'

My OS was Ubuntu 12.04 and my kernel was 3.2.0-31-generic
Now my kernel is 3.0.0-17-generic (at least is what I got when I do uname -r).

because my previous upgrade didn't complete update-manager doesn't work
it is telling me "index software is broken" please use Synaptic or sudo apt-get install -f to fix this issue
but I don't know how.
I didn't reboot my new system, please give me a hint what to do.

Thanks
Horacio

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: 12.10 broken index upgrade
-- 
When applying upgrade from 12.04 to 12.10 I got a ERROR and update-manager crashed
https://bugs.launchpad.net/bugs/1055386
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