update-manager crashed with AttributeError in escape(): 'NoneType' object has no attribute 'replace'

[Davemedia]

Stop aplication

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: update-manager 1:0.168
ProcVersionSignature: Ubuntu 3.5.0-10.10-generic 3.5.1
Uname: Linux 3.5.0-10-generic i686
ApportVersion: 2.4-0ubuntu8
Architecture: i386
Date: Thu Aug 30 18:47:58 2012
ExecutablePath: /usr/bin/update-manager
GsettingsChanges:
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'launch-time' b'1346363132'
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'319'
 b'com.ubuntu.update-manager' b'window-width' b'640'
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120724.2)
InterpreterPath: /usr/bin/python3.2mu
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/bin/update-manager
PythonArgs: ['/usr/bin/update-manager']
SourcePackage: update-manager
Title: update-manager crashed with AttributeError in escape(): 'NoneType' object has no attribute 'replace'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: nopasswdlogin

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Chris Johnston (cjohnston)]

Crashed on me today while I was doing an upgrade.

[Michael Vogt (mvo)]

Fixing this is easy:
=== modified file 'UpdateManager/UpdatesAvailable.py'
--- UpdateManager/UpdatesAvailable.py 2012-10-03 15:16:01 +0000
+++ UpdateManager/UpdatesAvailable.py 2012-10-10 08:06:24 +0000
@@ -715,7 +715,7 @@
                 if not pkg.is_installed:
                     name += _(" (New install)")
                 summary = xml.sax.saxutils.escape(getattr(pkg.candidate,
- "summary", None))
+ "summary", ""))
                 if self.summary_before_name:
                     contents = "%s\n<small>%s</small>" % (summary, name)
                 else:

Its a bit puzling that summary is empty though.

[Launchpad Janitor (janitor)]

This bug was fixed in the package update-manager - 1:0.174.3

---------------
update-manager (1:0.174.3) quantal; urgency=low

  * UpdateManager/UpdatesAvailable.py:
    - never pass "None" to xml.sax.saxutils.escape (LP: #1044080)
 -- Michael Vogt <email address hidden> Wed, 10 Oct 2012 10:21:50 +0200

[Karl J. Smith (karl-karl)]

I had been running 12.10 for a while, and just switched to a new mirror using the 'choose the best mirror'. It crashed right after I picked the new selection.