software-center crashed with SystemError in open(): E:Malformed line 1 in source list /etc/apt/sources.list.d/michael-gruz-canon___-natty.list (URI)

[TommyBoy]

Binary package hint: software-center

Ubuntu 11.04
Opened software centre with corrupt sources.list

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: software-center 4.0
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: fglrx
Architecture: i386
Date: Mon May 9 20:37:55 2011
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with SystemError in open(): E:Malformed line 1 in source list /etc/apt/sources.list.d/michael-gruz-canon___-natty.list (URI)
UpgradeStatus: Upgraded to natty on 2011-04-29 (10 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Launchpad Janitor (janitor)]

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

[Ivan Brasil Fuzzer (ivanbrasil)]

Same error in 12.10 alpha 3

[Rainer Rohde (rainer-rohde)]

Fresh installation of Beta 1 -- USC won't even start.