aptd crashed with AssertionError in _assert_bin_mode(): file stream must be in binary mode

[Michael Terry]

Got this after removing a bunch of obsolete packages in software-center.

This may be one of the similarly-named bugs. But I wasn't 100% sure. So I'm opening this one.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: aptdaemon 0.45+bzr852-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-14.15-generic 3.5.3
Uname: Linux 3.5.0-14-generic i686
ApportVersion: 2.5.1-0ubuntu7
Architecture: i386
Date: Mon Sep 10 16:06:22 2012
ExecutablePath: /usr/sbin/aptd
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110422)
InterpreterPath: /usr/bin/python3.2mu
PackageArchitecture: all
ProcCmdline: /usr/bin/python3.2 /usr/sbin/aptd
ProcEnviron:

PythonArgs: ['/usr/sbin/aptd']
SourcePackage: aptdaemon
Title: aptd crashed with AssertionError in _assert_bin_mode(): file stream must be in binary mode
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: