software-center crashed with TypeError: can't convert return value to desired type

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Binary package hint: software-center

updating from software centre .i tried to install padre ,for perl ide .the response was it was not froma validated software site.and hence cancelledinstalled installation.this happened for every software i triedto installwith ubuntu software centre ...pleasehelp

ProblemType: Crash
Architecture: amd64
Date: Fri Jan 15 20:46:04 2010
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100106)
InterpreterPath: /usr/bin/python2.6
Package: software-center 1.1.8
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 LANG=C
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-10.14-generic
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Tags: lucid
Title: software-center crashed with TypeError: can't convert return value to desired type
Traceback: TypeError: can't convert return value to desired type
Uname: Linux 2.6.32-10-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Jamie Strandboge (jdstrand)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Monkey (monkey-libre)]

I confirm the bug and I´ve got other similar. https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/508135
Thank You for making Ubuntu better.

[Monkey (monkey-libre)]

Architecture: i386
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100113)
Package: software-center 1.1.8
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-10.14-generic
Tags: lucid
Uname: Linux 2.6.32-10-generic i686
UserGroups:

[Monkey (monkey-libre)]

apport information

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #506050, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.