[Bug 1242814] Re: 13.04 to 13.10 dist upgrade fails with do-dist-upgrade crash

[Brian Murray]

*** This bug is a duplicate of bug 1241660 ***
    https://bugs.launchpad.net/bugs/1241660

** This bug has been marked a duplicate of bug 1241660
   DistUpgradeFetcherCore error messages not displayed

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https://bugs.launchpad.net/bugs/1242814

Title:
  13.04 to 13.10 dist upgrade fails with do-dist-upgrade crash

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  Very similar to https://bugs.launchpad.net/ubuntu/+source/update-
  manager/+bug/461744

  Apport started up when do-dist-upgrade crashed but it failed silently
  after and so I unfortunately do not have the stack trace or the apport
  files. But it was a Python stack trace (NoneType object reference
  related to window_main). Remounting /tmp with 'exec' flag fixed the
  problem as in the original bug linked above.

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